This is the fourth part in a five-part series previewing the Milwaukee Brewers by position heading into spring training, which starts Tuesday with pitchers and catchers reporting.

Friday: Starting pitchers
Saturday: Relief pitchers
Sunday: Catchers
Today: Infielders
Tuesday: Outfielders

ON THE ROSTER (alphabetical order): SS Jeff Bianchi (.188, 3 HR, 8 RBI, 0 SB), 1B Mat Gamel (.246, 1 HR, 6 RBI, 3 SB), 2B Scooter Gennett (.293, 5 HR, 44 RBI, 11 SB), SS Alex Gonzalez (.259, 4 HR, 15 RBI, 1 SB), 3B/2B Taylor Green (.184, 3 HR, 14 RBI, 0 SB), 1B Corey Hart (.270, 30 HR, 83 RBI, 5 SB), 3B Aramis Ramirez (.300, 27 HR, 105 RBI, 9 SB), SS Jean Segura (.258, 0 HR, 14 RBI, 7 SB), 2B Rickie Weeks (.230, 21 HR, 63 RBI, 16 SB)

OFFSEASON CHANGES: With all four starters returning across the infield, finding a veteran backup at shortstop was the top offseason priority. Still committed to Jean Segura as the starter, Alex Gonzalez brings everything the Brewers were looking for. It took a bit of patience and convincing for Gonzalez to re-sign as primarily a backup, but he gives Milwaukee a great insurance policy in case Segura isn't quite ready for the long season. Milwaukee's Opening Day starter in 2012, Gonzalez tore his ACL in May and missed the majority of the season. He proved the knee was healthy in workouts and in a short stint in winter ball. Though he's never played any position other than shortstop in the big leagues, Brewers manager Ron Roenicke recently hinted Gonzalez will see time at first base during the six weeks Corey Hart will miss following knee surgery. The Brewers still could add another option at first base before the season starts, but may be fine letting Gonzalez and Mat Gamel share time. Brewers general manager Doug Melvin also added former American League Rookie of the Year Bobby Crosby and utility man Donnie Murphy to minor league deals with invites to big league spring training.