1990 - 1999
H denotes home games & (H) denotes Homecoming
1990 AAA
| W | L | T |
| 7 | 3 | 0 |
Coach: Tom Moore (0-1 playoffs)
| Prosser (NL) | 7 | Grandview | 13 | |
| Prosser (NL) | 24 | Othello | 21 | |
| Prosser | 20 | Selah | 23 | |
| Prosser | 55 | Sunnyside | 7 | |
| Prosser | 35 | Eastmont | 7 | |
| Prosser | 29 | Ellensburg | 27 | |
| Prosser | 28 | West Valley | 24 | |
| Prosser | 30 | Hanford | 14 | |
| Prosser | 28 | Othello | 24 |
1st Round
Prosser 3 Cheney * 28 Total * - After playing a Kansas City tiebreaker against Selah & West Valley on Tuesday. The Mustangs came out flat against #2 ranked Cheney.
1991 AAA
W L T 12 1 0
Tom Moore (3 - 1) Playoffs
| Prosser H | 42 | Eastmont | 13 | |
| Prosser | 45 | Selah | 21 | |
| Prosser H | 57 | Sunnyside | 6 | |
| Prosser | 63 | Grandview | 27 | |
| Prosser | 35 | Ballard | 6 | |
| Prosser H | 42 | Hanford | 17 | |
| Prosser | 35 | West Valley | 28 | |
| Prosser H | 54 | Ellensburg | 0 | |
| Prosser | 48 | Othello * | 0 |
First Round
| Prosser | 56 | East Valley (Spokane) | 19 |
Quarter-Finals
| Prosser | 21 | West Valley (Yakima) ** | 14 |
Semi-Finals
| Prosser | 14 | Franklin *** | 0 |
State Championship
| Prosser | 14 | O'Dea **** | 21 |
* - Ryan Helms breaks the regular season record for passing touchdowns in a season, by throwing for 4 td's. He breaks the old record of 19 set by Buck Bruns, by throwing for 23.
** - Nick Shaw ran for 160 yards and scored 2 touchdowns in the last 9 minutes to lead Prosser from a 14 to 7 deficit to win 21 to 14.
*** - Prosser used a tenacious defense to smother RB Corey Dillion & keep the Quakers to 168 total yards.
**** - Nick Shaw electrifies the Kingdome crowd by ripping off a 79 touchdown run in the Championship game.
1992 AA
League Champions
| W | L | T |
| 13 | 0 | 0 |
(4 - 0) Playoffs
Coach: Tom Moore
| State Rank | Prosser | 41 | Eastmont | 0 | |
| Prosser H | 55 | Selah * | 0 | ||
| Prosser | 52 | Sunnyside | 0 | ||
| (2) | Prosser H | 51 | Grandview | 7 | |
| (2) | Prosser H | 69 | Ballard ** | 0 | |
| (2) | Prosser | 56 | Hanford | 14 | |
| (2) | Prosser H | 33 | West Valley | 14 | |
| (2) | Prosser | 46 | Ellensburg | 13 | |
| (2) | Prosser H | 77 | Othello *** | 0 |
First Round
Prosser 42 Hanford 6 Quarter-Finals
Prosser 21 West Valley (Yakima) **** 14 Semi-Finals
Prosser 38 Tumwater ***** 31 State Championship
Prosser 26 O'Dea ****** 0 * - Shane Stroh returned a kickoff 85 yards for a TD
** - Prosser's high octane offense amassed 607 total yards of offense in the drubbing of Ballard.
*** - Prosser eclipses the old scoring mark of 76 points in a game set in 1968
**** - Randy Carter becomes the Mustangs savior as he scores three 4th quarter td's to lead Prosser to a 21 to 14 win.
***** - Randy Carter stripped a T-Bird RB at the 4 yard line and scampered 96 yards for a TD to seal the victory.
****** - Derek Santo kicked a State Championship record 40 yard field goal.
1993 AA
League Champions
| W | L | T |
| 13 | 0 | 0 |
(4 - 0) Playoffs
Coach: Tom Moore
| State Rank | Prosser | 59 | Toppenish * | 16 | |
| Prosser | 42 | Grandview | 0 | ||
| (1) | Prosser H | 41 | Ephrata | 21 | |
| (1) | Prosser H | 37 | West Valley | 13 | |
| (1) | Prosser | 48 | Eastmont | 7 | |
| (1) | Prosser (H) | 27 | Selah | 3 | |
| (1) | Prosser | 58 | Sunnyside | 3 | |
| (1) | Prosser H | 35 | Hanford | 21 | |
| (1) | Prosser | 48 | Ellensburg ** | 7 |
First Round
Prosser 33 Hanford 14 Quarter-Finals
Prosser 18 West Valley (Yakima) 13 Semi-Finals
Prosser 33 Kennedy *** 7 State Championship
Prosser 22 Gig Harbor **** 20 * - Chris Brown returned a punt 73 yards for a TD
** - Aaron Sonnichsen threw 6 td passes to break the school for td passes in a season with 25 breaking the record of 23 by Ryan Helms set in 1991.
*** - "Downtown" Chris Brown caught a 63 TD pass & had a 58 yard punt return for a TD.
**** - Andy Harris rushed for 175 yards, including 6 straight carries for 38 yards to drain away the last 4:09 off the clock to preserve the win.
1994 AA
League Champions
| W | L | T |
| 10 | 1 | 0 |
(1 - 1) Playoffs
Coach: Tom Moore
| USA Today | State | Prosser H | 43 | Toppenish | 0 | |
| (22) | Prosser H | 41 | Grandview * | 0 | ||
| (22) | Prosser | 41 | Ephrata | 0 | ||
| (22) | (1) | Prosser | 14 | West Valley | 11 | |
| (21) | (1) | Prosser (H) | 42 | Eastmont ** |
0 | |
| (21) | (1) | Prosser | 34 | Selah | 28 | |
| (21) | (1) | Prosser H | 88 | Sunnyside *** | 0 | |
| (21) | (1) | Prosser | 38 | Hanford **** | 0 | |
| (20) | (1) | Prosser | 31 | Ellensburg ***** | 3 |
First Round
Prosser 7 Pullman 0 Quarter-Finals
Prosser 9 West Valley (Yakima) ****** 11 * - Prosser is ranked #22 in USA Today National football poll for the first time.
** - Jared Flores returned a punt 72 yards for a touchdown.
*** - 10 different Mustangs scored touchdowns as Prosser broke the school record for points in a game.
**** - Andy Harris rushed for 236 yards & 4 TD's, giving him 25 TD's on the season to set the Mid-Valley rushing TD mark.
***** - Andy Harris ties the Yakima Valley rushing TD record of 28 with a 3 TD performance.
****** - Jared Barbee's 24 yard field goal with seconds left, broke Prosser's 36 game winning streak.
1995 AA
League Champions
W L T 11 1 0 (3 - 1) Playoffs
Coach: Tom Moore
| State Rank | Prosser | 53 | Selah | 14 | |
| (2) | Prosser | 69 | Ephrata | 10 | |
| (3) | Prosser | 27 | Hanford * | 25 | |
| (3) | Prosser | 61 | Wapato | 0 | |
| (3) | Prosser | 20 | East Valley | 13 | |
| (3) | Prosser | 42 | Grandview | 27 | |
| (3) | Prosser | 54 | Sunnyside | 0 | |
| (3) | Prosser | 49 | Toppenish ** | 14 |
First Round
Prosser 20 Cheney *** 13 Quarter-Finals
Prosser 31 Ellensburg **** 14 Semi-Finals
Prosser 28 Renton ***** 13 State Championship
Prosser 14 O'Dea 35 * - Matt Hoefer scored on a 42 pass to seal the victory.
** - Joey Williams broke the school record for passing TD's in a season with 27, beating Aaron Sonnichsen's record of 25 set last year.
*** - Matt Hoefer intercepted 4 passes to preserve Prosser's win during a game long snowfall.
**** - Shane Vasile rushed for 208 yards & 4 TD's to beat Ellensburg.
***** - Matt Hoefer out leaped a Renton defender & ran for 70 yard TD pass.
1996 AA
League Champions
| W | L | T |
| 9 | 1 | 0 |
(1 - 1) Playoffs
Coach: Tom Moore
| Prosser H | 41 | Selah | 0 | |
| Prosser | 40 | Ephrata * | 13 | |
| Prosser H | 34 | Hanford | 10 | |
| Prosser H | 76 | Wapato | 7 | |
| Prosser | 62 | East Valley | 6 | |
| Prosser H | 26 | Grandview ** | 0 | |
| Prosser | 27 | Sunnyside | 21 | |
| Prosser | 42 | Toppenish *** | 20 |
First Round
| Prosser | 35 | East Valley (Spokane) | 25 |
Quarter-Finals
| Prosser | 10 | West Valley (Yakima) **** | 14 |
* - Benji Sonnichsen broke the school record for passing yards with 341.
** - Shane Vasile rushes for 172 yards including a 77 yard scamper for a TD.
*** - Benji Sonnichsen breaks the school record passing yards with 394 eclipsing the record he set earlier in the season. Dan Marchant also set a school record with 218 receiving yards including a 85 yard reception.
**** - In the biggest heartbreaker I have ever seen, West Valley's Jess Sexton caught a tipped pass in the end zone & returned it 105 yards for a Ram's victory.
1997 AA
League Champions
| W | L | T |
| 10 | 1 | 0 |
(1 - 1) Playoffs
Coach: Tom Moore
| State Rank | Prosser H | 41 | Mt. Tamalpais * | 13 | |
| Prosser | 55 | Hanford ** | 29 | ||
| Prosser H | 42 | Sunnyside | 0 | ||
| (4) | Prosser | 42 | Eastmont | 12 | |
| (4) | Prosser H | 32 | Hanford *** | 3 | |
| (4) | Prosser | 37 | Moses Lake | 32 | |
| (4) | Prosser H | 43 | Ellensburg | 17 | |
| (4) | Prosser | 22 | Selah **** | 6 | |
| (3) | Prosser | 35 | West Valley | 16 |
First Round
| Prosser | 50 | Olympia | 23 |
Quarter-Finals
| Prosser | 20 | Moses Lake ***** | 27 |
* - Eric McClure took the opening kickoff 86 yards for a TD.
** - Tyler Thomas threw for 362 yards & 6 TD's.
*** - Eric McClure scored on a 65 yard punt return & a 65 yard TD pss.
**** - Tyler Thomas broke the Yakima Valley passing record of 2,039 yards set by Cary Conklin in '85. Thomas ended up with 2,301 yards on the season (his record was broken a few years later by a player from White Swan).
***** - Eric McClure caught 7 passes for 156 yards in the losing effort.
1998 AA
League Champions
| W | L | T |
| 10 | 1 | 0 |
(1 - 1) Playoffs
Coach: Tom Moore
| State Rank | Prosser H | 33 | Pendleton * | 13 | |
| Prosser H | 21 | Hanford | 3 | ||
| Prosser | 43 | Sunnyside | 0 | ||
| (3) | Prosser (H) | 43 | Eastmont | 23 | |
| (3) | Prosser | 28 | Hanford | 7 | |
| (3) | Prosser H | 17 | Moses Lake | 14 | |
| (3) | Prosser | 35 | Ellensburg ** | 34 | |
| (2) | Prosser H | 41 | Selah | 14 | |
| (2) | Prosser H | 22 | West Valley | 19 |
First Round
Prosser 44 Mercer Island *** 21 Quarter-Finals
Prosser 13 Moses Lake **** 33 * - Prosser sets the State record with their 68th straight regular season win.
** - Troy Thomas threw for 378 yards & 3 TD's as Prosser came from a 21 to 0 deficit to win.
*** - Scott Storms rushes for 214 yards & 3 TD's in playoff victory.
**** - Moses Lake QB B.J. Garbe ran 27 times for 250 yards & 4 TD's
1999 AAA
Mid-Valley League Champions
W L T 12 2 0 Playoffs (5-0)
Coach: Tom Moore
State Rank Prosser 34 Pendleton 24 Prosser H 44 Hanford NL 7 Prosser (H) 37 Sunnyside 0 (1) Prosser 21 Hanford (OT) * 27 (7) Prosser 12 West Valley 9 (7) Prosser H 24 Ferndale ** 42 (10) Prosser 62 Eastmont 19 (10) Prosser H 38 Ellensburg *** 0 (9) Prosser H 55 Selah 28 Regional
Prosser 30 Clarkston 23 First Round
Prosser 40 Cheney 0 Quarter-Finals
Prosser 24 Tumwater 13 Semi-Finals
Prosser 21 Ferndale 17 State Championship
Prosser 42 Sammamish **** 38 * - Scott Storms carried the ball for 226 yards & 3 TD's, but came up short as Hanford ended Prosser's regular season unbeaten streak at 79 games.
** - Ferndale's Robert Davis rushed for 290 yards & 3 TD's as Prosser lost for the second time this season. The last time Prosser lost 2 games in a regular season was 1991.
*** - Scott Storms rushed for 210 yards, caught 3 passes for 105 yards & scored 3 TD'S in dominating Ellensburg.
**** - In one of the greatest Championship games ever. Prosser blew a 35 to 17 lead to hold on for their 3rd State title.
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