Was a high-velocity pitcher at Wake Forest Rolesville High School and in fact, was ranked as the No. 1 pitching prospect in North Carolina. Chose to attend Wake Forest University and after redshirting as a freshman, he fashioned an outstanding baseball career, not as a pitcher, but as an outfielder. Had labrum surgery as a college freshman. Earned First Team All-ACC honors as a junior in 2012. Led the ACC wuth 17 HRs in 2012 and finished his three year collegiate career with 36 home runs. Was selected by the Red Sox in the 46th round of the 2011 First-Year Player Draft, but decided to return to Wake Forest. The following June, the Giants chose Williamson with their third-round pick.
Hit .235 (16-for-68) with three home runs and six RBI in 28 games (19 starts) with SF...Was recalled three separate times...Began the season on the disabled list after he strained his left quad in the fi nal weeks of spring training...Matched his career-high with three hits on Sept. 24 at Los Angeles-NL...went 3x3 with a home run against LHP Clayton Kershaw...Hit .244 (86-for-352) with 21 doubles, 14 HRs and 50 RBI in 94 games with triple-A.
Hit .223 (25-for-112) with six home runs and 15 RBI in 54 games with San Francisco. Made 28 starts (nine in LF and 19 in RF). Missed 27 games from Aug. 2-Sept. 1 with a left shoulder strain. Was activated from the 15-day disabled list (left shoulder strain) on Sept. 1. Hit his first Major League homer on June 8 vs. Boston off LHP David Price…his solo shot broke a 1-1 tie in the eighth inning...he became the first Giants player to have his first big league homer break a tie in the eighth inning or later since John Patterson on Sept. 1, 1993 vs. Atlanta. Went 5-for-19 (.263) with a home run and two RBI as a pinch-hitter. His season came to an end on Sept. 27, with just six regular season games remaining, because of a strained quadriceps he sustained while running down the line in San Diego…was placed on the 60-day disabled list, ending his season.
Appeared in 10 games (nine starts) for the Giants, hitting .219 (7-for-32) with a triple and RBI....Had his contract purchased from triple-A Sacramento Sept. 16....Recorded his first career hit in the fifth inning off Oakland's RHP Sonny Gray on Sept. 25...went 2-for-4 in his first career start...Split the 2015 season between double-A Richmond and triple-A Sacramento, combining to hit .275 with 13 HRs and 73 RBI....Following the season he played for the Scottsdale Scorpions in the Arizona Fall League and batted .370 (27-for-73) with two home runs and 14 RBI in 19 games...helped lead the Scorpions to win the AFL Championship....Was named to the Arizona Fall League 2015 Top Prospects Team.
Hit .318 with seven doubles, three home runs and 11 RBI in 23 games for Class A Advanced San Jose....Had his season cut short after requiring Tommy John surgery on his right elbow on April 29…orthopedist Dr. James Andrews performed the surgery....Had been dealing with the injury to his throwing elbow all season.
Had the most impressive season of any Giants hitting prospect at a full-season affiliate, leading the organization in home runs (28) and RBI (89)...Was promoted to Class A Advanced San Jose in just his second professional campaign and hit .292 (152-for-520) with 25 home runs and 89 RBI in 136 games...Among the California League leaders he ranked tied for third in home runs and games played, tied for fourth in hits, fourth in total bases (262) and fifth in runs scored(94)...Finished 2013 ranked tied for third on San Jose's single-season home run list...Was awarded SJ's co-team MVP award (wth Ty Blach)...Was named California League Player of the Week for Aug. 19-26 after going 16-for-31 (.516) with four home runs and 12 RBI...Enters the 2014 season rated by Baseball America as the fifth best prospect in the Giants' minor league.
In the 2012 season, Williamson began his professional career playing four Rookie League games in Arizona…he hit two home runs in only 19 plate appearances...Later that season, was moved to short-season Salem-Keizer in the Northwest League and hit seven home runs in 125 plate appearances.