Gianison Giamar Boekhoudt also listed as Gianison Rosa, 2010-2012
- Bats Left, Throws Right
- Height 6' 0", Weight 205 lb.
- High School Mary Carroll High School
Gianison Boekhoudt played three seasons in the minor leagues.
Boekhoudt was taken by the Washington Nationals in the 26th round of the 2009 amateur draft. He was 0 for 5 with a walk for the 2010 GCL Nationals and spent most of the season with the independent Coastal Bend Thunder (.272/.371/.526, 6 HR, 21 R, 21 RBI, 10 PB in 36 G, 49 K in 114 AB). He hit .221/.394/.377 as a backup left fielder for the 2011 AZL Dodgers. Primarily a DH for the McAllen Thunder in 2012, he produced at a .251/.384/.311 clip with 55 walks in 77 games. He was second in the North American League in walks.
Gianison signed with the Hoofdklasse's DOOR Neptunus powerhouse for 2013 Hoofdklasse; he hit .288/.408/.441 with 38 runs, 36 RBI, 34 walks and 11 steals (in 12 tries) in 42 games while fielding .986 (primarily in the outfield). He was among the league leaders in runs (5th, between Phil Ortez and Vince Rooi), hits (47, tied for 10th with Ramiro Balentina and Remco Draijer), RBI (2nd, two behind Dwayne Kemp), homers (5, 2nd, one behind Bryan Engelhardt), total bases (72, tied for 6th with Shaldimar Daantji), walks (1st by one over Draijer), steals (tied for 7th), plate appearances (203, 1st), at-bats (163, tied for 4th with Danny Rombley) and strikeouts (43, 1st). Despite the high walk and total bases totals, he did not make the top 10 in either slugging or OBP.