Brett Steven Harris was originally signed by A’s scout James Coffman…graduated from John Hershey High School…redshirted at Houston in 2017 before transferring to Central Arizona College…then batted .324 with a .427 on-base percentage, 10 home runs and 78 RBI in three seasons at Gonzaga University…was named a Collegiate Baseball Third-Team All-American in 2021.
2025
Combined to play in just 92 games in the Majors and Minors due to three stints on the injured list…began the season on the A's IL with a strained left oblique and had two stints on the IL with Triple-A Las Vegas (sprained left thumb, strained right oblique)...Batted .274 with no home runs, five RBI and a .692 OPS in 32 games with the A's in the final month and a half of the season after hitting .146 in his Major League debut in 2024...Hit .304 (14-for-46) with a .769 OPS against right-handed pitchers compared to .222 (6-for27) with a .559 OPS against left-handers...Batted .345 in 10 day games, .227 in 22 night games…now has a .275 career average with all three of his home runs in 23 day games compared to .150 in 45 contests at night...Went 4-for-7 (.571) in six interleague games…hit .242 against American League competition...Batted .256 with two strikes...Started 20 games at third base and one at first base…made one error in 27 games as a third baseman for a .983 fielding percentage...Was 1-for-4 (.250) as a pinch hitter...Made all of his starts in the bottom four spots in the batting order, including nine from the eight spot and seven hitting ninth...Hit .282 with 12 home runs and 39 RBI in 59 games with Las Vegas…also went 2-for-2 on a one-game rehab assignment with the A's affiliate in the Arizona Complex League and batted .289 with a .890 OPS in 60 Minor League games overall...Had Minor League career highs in OPS, slugging (.514) and sacrifice flies (4)…struck out 38 times for a career-best average of 6.71 plate appearances per strikeout...Batted .355 (22-for-62) with a 1.031 OPS against left-handed pitchers, .263 (41-for-156) with a .834 OPS against right-handers...His average dropped to .238 with runners in scoring position...Had a .324 batting average, 10 of his 12 home runs, 28 of his 39 RBI and a 1.091 OPS in 30 home games…batted .257 with a .705 OPS in 30 road games...Started 45 games at third base, six at first base, four at second and four at designated hitter...made two errors, both as a third baseman (.981 fielding percentage)...Made starts in every spot in the order except eighth…had 15 starts batting sixth and 14 hitting seventh.
2024
Made his Major League debut and hit .146 with three home runs and 12 RBI in 36 games over two stints with the A’s…also batted .281 with eight home runs, 45 RBI and an .804 OPS in 74 games with Triple-A Las Vegas...Added 17 walks with the A’s and was hit by a pitch twice for a .276 on-base percentage...Hit .167 (5-for-30) against left-handed pitchers, .137 (10-for-73) with all three of his home runs and 11 of his 12 RBI against right-handers...Had a .069 batting average with the bases empty, .244 with runners on…hit .250 with runners in scoring position...Batted .193 with all three of his home runs and 11 of his 12 RBI in 19 home games…hit .087 on the road...Hit .225 with all three of his home runs during the day, .095 at night...Had a .049 batting average with two strikes...Appeared exclusively at third base on defense where he made 31 starts…committed three errors in 35 games overall at third for a .963 fielding percentage...Made 19 starts hitting eighth in the order and 12 from the nine spot...In addition to 74 games with Las Vegas, he also had a one-game rehab assignment with the A’s affiliate in the Arizona Complex League…batted .282 with a career-high .386 on-base percentage in 75 minor league games overall...Hit .360 (27-for-75) with a .909 OPS against left-handed pitchers, .253 (50-for-198) with eight of his nine home runs and a .778 OPS against right-handers...Had a .309 batting average with runners in scoring position…was 3-for-5 with a home run and nine RBI with the bases loaded...Batted .400 in 12 day games and .315 in 32 contests on the road...Hit .236 with five home runs and 26 RBI over innings 1-6, .395 with four home runs and 21 RBI from the seventh inning on...Started 57 games at third base, 12 at second base, three at designated hitter and one at shortstop…committed two errors as a third baseman (.984 fielding percentage) and also had one at second base.
2023
Split his season between Double-A Midland and Triple-A Las Vegas and batted a combined .279 with nine home runs, 62 RBI and an .807 OPS in 105 games...Had career highs in on-base percentage (.383), doubles (23), triples (3) and hit by pitches (17) and matched his best in walks (50)...Was successful in 10-of-11 (90.9%) stolen base attempts...Led the A’s farm system in hit by pitches, ranked sixth in on-base percentage, ninth in batting, 10th in OPS and tied for 10th in RBI and walks (50)...Batted .291 (82-for-282) with an .833 OPS against right-handed pitchers compared to .248 (26-for-105) with a .737 OPS against left-handers...Hit .238 with the bases empty, .324 with runners on…had a .303 average with runners in scoring position...Seven of his nine home runs were solo shots and seven came in his home ballparks...Started 96 games at third base, four at designated hitter, three at second base and one at shortstop…made nine errors as a third baseman (.966 fielding percentage)…also had one error at shortstop...Made starts in every spot in the order except first, fourth and fifth…saw his most action with 54 starts in the three spot...Was rated as the A’s 10th-best prospect by MLB.com...Played for Mesa in the Arizona Fall League following the season and hit .192 with two RBI in 17 games…walked 15 times and was hit by a pitch twice for a .391 on-base percentage.
2022
Began his first full professional season at High-A Lansing and hit .304 with seven home runs and 18 RBI in 29 games before he was moved up to Double-A Midland…batted .286 with 10 home runs and 45 RBI in 84 games with the RockHounds…combined for a .290 batting average, 17 home runs, 63 RBI and an .849 OPS in 113 games overall…had career highs in batting, slugging (.475), OPS, runs (73), hits (121), home runs, RBI, walks (50), stolen bases (11), extra base hits (41), games and strikeouts (83)…ranked second in the A’s farm system in OPS and runs, third in batting, slugging and hits, fourth in on-base percentage (.374), tied for fifth in extra base hits, seventh in RBI, eighth in doubles (22) and home runs, tied for eighth in walks and tied for 10th in stolen bases…hit .304 with an .884 OPS against left-handed pitchers, .286 with an .838 OPS and 14 of his 17 home runs against right-handers…started 86 games at third base, 21 at second base and four at designated hitter…committed nine errors as a third baseman (.958 fielding percentage) and three as a second baseman (.970)…made starts at every spot in the batting order except eighth and had his most starts hitting second (32)…hit .366 with five home runs and 11 RBI in 12 game hitting clean-up…was named an A’s Organizational All-Star by MLB.com…finished April with a .302 batting average and .422 on-base percentage in 15 games and then hit .328 with a .413 on-base percentage, seven home runs, 16 RBI and a 1.148 OPS in 18 games in May…went 14-for-37 (.378) with six home runs and 11 RBI over a 10-game stretch from May 4-17…had his first career two-homer game May 11 against Dayton…was promoted to Midland on May 27 and went 11-for-23 (.478) with five multiple hit games, five doubles, a home run and five RBI in his first six games at the Double-A level…homered in three straight games from July 3-6 …had his first career four-hit game July 31 against San Antonio…that began a career-high 10-game hitting streak that ran through Aug. 16…went 16-for-40 (.400) with 11 runs, seven RBI and six stolen bases during the streak…stole a career-high three bases Aug. 12 at Tulsa…batted .316 with seven stolen bases in 20 games in August…went 13-for-34 (.372) with 10 RBI over his final 10 games beginning Sept. 4.
2021
Made his professional debut with the A’s affiliate in the Arizona Complex League and played in two games before he was transferred to High-A Lansing on Aug. 11…appeared in 25 games with the Lugnuts and batted .238 with three home runs and 14 RBI in 27 games overall… added 10 walks and four hit by pitches for a .347 on-base percentage…hit .318 against left-handed pitchers compared to .210 against right-handers…connected for all three of his home runs against righties…started 17 games at third base, four at shortstop and three at second base… made one error each at shortstop and third base…made starts in the five (nine games), two (eight games), six (seven games) and four (one game) spots in the order…made his debut on Aug. 9 at the Giants-Black and singled, walked and drove in a run in two plate appearances…was 2-for-3 (.667) with three RBI in two games when he was moved up to Lansing on Aug. 11…hit .222 with three home runs and 11 RBI in 25 games with the Lugnuts…hit his first professional home run Aug. 14 against Dayton and all three of his home runs came over a five-game stretch from Aug. 14-19…hit his first career grand slam and drove in a career-high four runs Aug. 19 at Great Lakes.
