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BoP Lab / Drivers / Tony Rivera

Tony Rivera 1 letter to Fastrack

Compare with another driver
Class
Event
Session

Against the front of the class, by track and class

TrackClassSessionsTypical gap to class bestClosest
Road America (4.05 mi)GT35+3.553s (2.50%)+2.983s (2.09%)
Road America (4.05 mi)GT3U5+3.106s (2.14%)+2.655s (1.85%)
Road America (4.05 mi)STU3+6.077s (4.19%)+6.077s (4.19%)
Buttonwillow Raceway Park (2.57 mi)STU4+0.000s (0.00%)+0.000s (0.00%)
Watkins Glen International (3.40 mi)GT3U5+0.000s (0.00%)+0.000s (0.00%)
Portland International Raceway (1.97 mi)GT3U2+0.000s (0.00%)+0.000s (0.00%)
Hallett Motor Racing Circuit (1.80 mi)GT3U3+0.000s (0.00%)+0.000s (0.00%)
Buttonwillow Raceway Park (2.92 mi)GT310+3.847s (3.45%)+2.842s (2.54%)
Buttonwillow Raceway Park (1.83 mi)GT31+4.153s (6.11%)+4.153s (6.11%)
Circuit of the Americas (3.41 mi)GT34+0.000s (0.00%)+0.000s (0.00%)
Virginia International Raceway (3.27 mi)GT39+1.940s (1.63%)+0.000s (0.00%)

Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.

Road America (4.05 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Runoffs 2026STU National Championship RaceSTU09Mazda RX-318/162:26.416Richard Astacio
Runoffs 2026STU Qualifying 3STU09Mazda RX-310/162:30.9892:24.912Richard Astacio+6.077s (4.19%)134.810/16143.8Hugh Stewart-9.0 mph (-6.3%)
Runoffs 2026Wed Grp 9 STU T2 AS Run 2STU09Mazda RX-36/62:42.2482:28.771Richard Astacio+13.477s (9.06%)121.96/6139.1Anthony Geraci-17.2 mph (-12.4%)
Runoffs 2025GT3U/STU National Championship RaceGT3U09Mazda RX-32/82:27.6892:23.605Tony Ave+4.084s (2.84%)140.65/8146.4Rob Warkocki-5.8 mph (-4.0%)
Runoffs 2025GT3U/STU Qual 2GT3U09Mazda RX-34/82:26.0912:23.436Tony Ave+2.655s (1.85%)140.65/8145.3Jeff Dernehl-4.7 mph (-3.3%)
Runoffs 2025GT3U/STU Qual 1GT3U09Mazda RX-35/82:27.9132:24.807Tony Ave+3.106s (2.14%)139.15/8145.6Jeff Dernehl-6.4 mph (-4.4%)
Runoffs 2025Wed Grp 9 GT3U STU T2 AS Run 2GT3U09Mazda RX-34/52:41.3212:27.764Jeff Dernehl+13.557s (9.17%)119.34/5144.3Jeff Dernehl-25.0 mph (-17.3%)
Runoffs 2025Wed Grp 9 GT3U STU T2 AS Run 1GT3U09Mazda RX-34/32:25.596Jeff Dernehl
Runoffs 2024GT3 RaceGT309Mazda RX-38/132:25.8462:22.863Tony Ave+2.983s (2.09%)141.24/13147.9Jeff Dernehl-6.6 mph (-4.5%)
Runoffs 2024GT3 Qual 3GT309Mazda RX-35/132:25.7972:22.244Michael Lewis+3.553s (2.50%)
Runoffs 2024GT3/STU Qual 2GT309Mazda RX-35/132:26.9932:22.108Tony Ave+4.885s (3.44%)146.14/13151.2Jeff Dernehl-5.1 mph (-3.4%)
Runoffs 2024GT3/STU Qual 1GT309Mazda RX-37/112:36.0992:24.553Jeff Dernehl+11.546s (7.99%)134.66/11148.5Jeff Dernehl-13.9 mph (-9.4%)
Runoffs 2024Run 2 GT1, GT2, GT3 MonGT309Mazda RX-36/52:24.309Jeff Dernehl

Buttonwillow Raceway Park (2.57 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Cal Club 2026Grp 5 STU STL T3 T4 Race 2STU09Mazda RX-32/61:52.7371:52.737you+0.000s (0.00%)130.63/6134.8Rylan Hazelton-4.2 mph (-3.1%)
Cal Club 2026Grp 5 STU STL T3 T4 Qual 2STU09Mazda RX-31/41:50.9131:50.913you+0.000s (0.00%)135.21/4135.2you+0.0 mph (0.0%)
Cal Club 2026Grp 5 STU STL T3 T4 Race 1STU09Mazda RX-32/71:54.1151:54.115you+0.000s (0.00%)130.13/7133.6Sean Lovett-3.5 mph (-2.6%)
Cal Club 2026Grp 5 STU STL T3 T4 Qual 1STU09Mazda RX-36/51:56.747Sean Lovett

Watkins Glen International (3.40 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Glen Region SCCA Hoosier Super Tour @ Watkins Glen InternationalGrp 7 GT3U STU STL Race 2GT3U09Mazda RX-31/22:05.2072:05.207you+0.000s (0.00%)137.61/2137.6you+0.0 mph (0.0%)
Glen Region SCCA Hoosier Super Tour @ Watkins Glen InternationalGrp 7 GT3U STU STL Race 1GT3U09Mazda RX-32/42:05.4802:04.206Tony Ave+1.274s (1.03%)137.81/4137.8you+0.0 mph (0.0%)
Glen Region SCCA Hoosier Super Tour @ Watkins Glen InternationalGrp 7 GT3U STU STL Qual 2GT3U09Mazda RX-33/22:14.810Peter Tonelli II
Glen Region SCCA Hoosier Super Tour @ Watkins Glen InternationalGrp 7 GT3U STU STL Qual 1GT3U09Mazda RX-34/32:03.482Tony Ave
Glen Region SCCA Hoosier Super Tour @ Watkins Glen InternationalGrp 7 GT3U STU STL PracticeGT3U09Mazda RX-31/42:06.0862:06.086you+0.000s (0.00%)132.02/4133.7Tony Ave-1.7 mph (-1.3%)

Portland International Raceway (1.97 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Oregon 2025Grp 5 STU GT3U T3 T4 STL Race 2GT3U09Mazda RX-31/31:22.2911:22.291you+0.000s (0.00%)133.42/3134.3Taz Harvey-0.9 mph (-0.7%)
Oregon 2025Grp 5 STU GT3U T3 T4 STL Qual 2GT3U09Mazda RX-31/11:26.4621:26.462you+0.000s (0.00%)116.61/1116.6you+0.0 mph (0.0%)

Hallett Motor Racing Circuit (1.80 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
AVRG Green Country Grand Prix 2025Grp 1 STU GT3U T3 T4 STL Race 2GT3U09Mazda RX-32/41:22.0271:21.363Chris Edens+0.664s (0.82%)108.61/4108.6you+0.0 mph (0.0%)
AVRG Green Country Grand Prix 2025Grp 1 STU GT3U T3 T4 STL Race 1GT3U09Mazda RX-31/21:37.5191:37.519you+0.000s (0.00%)92.61/292.6you+0.0 mph (0.0%)
AVRG Green Country Grand Prix 2025Grp 1 STU GT3U T3 T4 STL Qual 1GT3U09Mazda RX-31/41:22.3091:22.309you+0.000s (0.00%)109.22/4110.9Chris Edens-1.7 mph (-1.5%)

Buttonwillow Raceway Park (2.92 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Cal Club 2024Grp 5 GT1,2,3,X,AS,T1 Race 2GT309Mazda RX-32/41:57.9461:52.971Michael Lewis+4.975s (4.40%)117.93/4119.6Michael Lewis-1.7 mph (-1.4%)
Cal Club 2024Grp 5 GT1,2,3,X,AS,T1 Race 1GT309Mazda RX-34/31:53.947Michael Lewis
Cal Club 2024Grp 5 GT1,2,3,X,AS,T1 Qual 2GT309Mazda RX-34/51:58.8851:55.380Michael Lewis+3.505s (3.04%)118.42/5118.9Michael Lewis-0.5 mph (-0.4%)
Cal Club 2024Grp 5 GT1,2,3,X,AS,T1 Qual 1GT309Mazda RX-33/31:58.2371:52.853Michael Lewis+5.384s (4.77%)112.11/1112.1you+0.0 mph (0.0%)
Cal Club 2024Grp 5 GT1,2,3,X,AS,T1 PracGT309Mazda RX-33/41:59.7861:53.419Michael Lewis+6.367s (5.61%)117.42/4118.9Michael Lewis-1.5 mph (-1.3%)
Cal Club 2022Grp 7 GT3,STL,STU,T2.T3,T4 Race 2GT309Mazda RX-33/81:54.8191:51.977Collin Jackson+2.842s (2.54%)121.91/8121.9you+0.0 mph (0.0%)
Cal Club 2022Grp 7 GT3,STL,STU,T2.T3,T4 Race 1GT309Mazda RX-34/101:55.4671:51.620Troy Ermish+3.847s (3.45%)120.92/10121.0Troy Ermish-0.2 mph (-0.1%)
Cal Club 2022Grp 7 GT3,STL,STU,T2.T3,T4 Qual 2GT309Mazda RX-310/91:49.458Troy Ermish
Cal Club 2022Grp 7 GT3,STL,STU,T2.T3,T4 Qual 1GT309Mazda RX-33/81:56.5151:52.087Collin Jackson+4.428s (3.95%)119.54/8121.4Collin Jackson-2.0 mph (-1.6%)
Cal Club 2022Grp 7 GT3,STL,STU,T2.T3,T4 PracticeGT309Mazda RX-33/61:56.7051:53.149Troy Ermish+3.556s (3.14%)119.12/6120.9Troy Ermish-1.8 mph (-1.5%)

Buttonwillow Raceway Park (1.83 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Cal Club 2023Grp 7 Race 2GT309Mazda RX3 (1974)4/51:12.1261:07.973Collin Jackson+4.153s (6.11%)

Circuit of the Americas (3.41 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Lone Star Grand Prix 2023Grp 1 STL,T2,T3,T4,STU,GT3 Race 2GT309Mazda RX-33/32:26.4452:26.011Joe Kristensen+0.434s (0.30%)136.42/3136.9Joe Kristensen-0.6 mph (-0.4%)
Lone Star Grand Prix 2023Grp 1 STL,T2,T3,T4,STU,GT3 Qual 2GT309Mazda RX-32/22:26.0362:25.814Michael Lewis+0.222s (0.15%)125.02/2129.3Michael Lewis-4.3 mph (-3.4%)
Lone Star Grand Prix 2023Grp 1 STL,T2,T3,T4,STU,GT3 Race 1GT309Mazda RX-31/32:27.0502:27.050you+0.000s (0.00%)131.61/3131.6you+0.0 mph (0.0%)
Lone Star Grand Prix 2023Grp 1 STL,T2,T3,T4,STU,GT3 Qual 1GT309Mazda RX-31/22:28.2062:28.206you+0.000s (0.00%)135.01/2135.0you+0.0 mph (0.0%)

Virginia International Raceway (3.27 mi)

EventSessionClass#CarPosBest lapClass bestTo class bestTrapClass trapTo class trap
Runoffs 2022GT3 RaceGT309Mazda RX-35/122:31.7202:24.347Tony Ave+7.373s (5.11%)127.26/12138.6Jeff Dernehl-11.4 mph (-8.2%)
Runoffs 2022GT3 Qual 3GT309Mazda RX-312/111:57.754Troy Ermish
Runoffs 2022GT3 Qual 2GT309Mazda RX-313/111:57.135Jeff Dernehl
Runoffs 2022GT3/STU Qual 1GT309Mazda RX-34/112:00.7061:58.766Troy Ermish+1.940s (1.63%)144.73/11149.5Jeff Dernehl-4.8 mph (-3.2%)
Runoffs 2022Grp 9 Run 2 GT1,GT2,GT3 MonGT309Mazda RX-33/42:01.5551:58.613Troy Ermish+2.942s (2.48%)144.72/4147.6Jeff Dernehl-2.9 mph (-1.9%)
Runoffs 2022Grp 9 Run 1 GT1,GT2,GT3 MonGT309Mazda RX-33/42:02.9322:00.354Jeff Dernehl+2.578s (2.14%)145.22/4147.6Jeff Dernehl-2.4 mph (-1.6%)
Runoffs 2022Grp 6 Run 3 AS,GT1,GT2,GT3,STU,T1,T2 SunGT309Mazda RX-31/12:31.7932:31.793you+0.000s (0.00%)143.91/1143.9you+0.0 mph (0.0%)
Runoffs 2022Grp 6 Run 2 AS,GT1,GT2,GT3,STU,T1,T2 SunGT309Mazda RX-31/12:10.5362:10.536you+0.000s (0.00%)145.71/1145.7you+0.0 mph (0.0%)
Runoffs 2022Grp 6 Run 1 AS,GT1,GT2,GT3,STU,T1,T2 SunGT309Mazda RX-31/12:10.3402:10.340you+0.000s (0.00%)144.21/1144.2you+0.0 mph (0.0%)

Letters to Fastrack

GTL Rotary Engine 12A Rotor Housings

#35131 from Tony Rivera · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Engines - Mazda Spec Lines, add to Notes as follows:
12A Street Port: "Contact National Office for specific details of various allowable port configurations. May machine and use 13B
housing to O.E. 12A spec’s."
12A Bridge Port: "Optional choke size 42mm @2010lbs. May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2150lbs: "May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2300lbs: "Disenfranchised GT2* May machine and use 13B housing to O.E. 12A spec’s."