First Baseman: Brandon Belt (2011-19)
Stats: 4,221 PA, .261 BA, 120 OPS+, 392 XBH (129 HR), 472 RBI, 513 R, 23.2 WAR
While he has never quite delivered on his full potential, Brandon Belt is a fairly easy pick for the starting first base spot.
After all, he has been the team’s primary first baseman since the 2012 season.
A fifth-round pick in 2009, Belt has never had prototypical first baseman power, with a career-high 18 home runs in 2015 and 2017.
However, he’s been a consistent on-base threat with an 11.9 percent walk rate and a .354 on-base percentage over the course of his career. He’s also a standout defender at first base.
All of that has been worth 23.2 WAR, which trailed only Buster Posey (42.2) and Brandon Crawford (23.6) among all position players for the decade.