1235 N Center St., Mesa Re-opened: 2015 Capacity: 10,000 Tickets: $9-42 Schedule
2014 record: 88-74
Manager: Bob Melvin (fifth season) Key additions: 2B Ben Zobrist (trade, Rays), DH Billy Butler (free agent, Royals), 1B Ike Davis (trade, Pirates), 3B Brett Lawrie (trade, Blue Jays), SS Marcus Semien (trade, White Sox), RHP Jesse Hahn (trade, Padres), RHP Tyler Clippard (trade, Nationals) Key losses: 1B Brandon Moss (trade, Indians), 3B Josh Donaldson (trade, Blue Jays), RHP Jeff Samardzija (trade, White Sox), SS Jed Lowrie (free agent, Astros), INF Alberto Callaspo (free agent, Braves), OF Jonny Gomes (free agent, Braves), RHP Jason Hammel (free agent, Cubs), LHP Jon Lester (free agent, Cubs), DH Adam Dunn (retired), LHP Luke Gregerson (free agent, Astros), C John Jaso (trade, Rays), C Derek Norris (trade, Padres) Roster
Getty ImagesJim McIsaac
3 things to watch: Infield cohesion
The A's entire infield is hoping to replace starters from a year ago. Moss at first, Donaldson at third and Lowrie at shortstop are all gone. In their place to start spring training are first baseman Davis (pictured), third baseman Lawrie and shortstop Semien. Newcomer Zobrist will play at second base and returner Stephen Vogt could win the catching job, but how they operate as a unit is the thing to watch.
Keith Srakocic/APKeith Srakocic
3 things to watch: Replacing the big bats
Davis (.233/.344/.378), Lawrie (.247/.301/.421) and Semien (.234/.300/.372) didn't have eye-popping numbers a year ago, and there certainly should be a worry the team can't replace Donaldson's and Moss' combined 54 home runs and 179 RBI from last season. Zobrist's .272/.354/.395 line helps, but it goes beyond the numbers. Lawrie missed half of last season because of injury, and Davis has struggled the past two years despite being known as a powerful hitter. A few players in the lineup will need to improve upon their 2014, but the offensive identity may need to change either way.
Rick Osentoski-USA TODAY SportsRick Osentoski
3 things to watch: Pitching health
Sonny Gray, Scott Kazmir and newcomer Jesse Hahn should be able to figure themselves into the starting group that lost Samardzija and Hammel. Beyond that, there's some mystery. Jarrod Parker and A.J. Griffin are both coming off Tommy John surgeries and while they aren't expected to return before opening day, they've been active at the start of camp. Kendall Graveman and Sean Nolin, two pitchers involved in the Donaldson trade to Toronto, could challenge for starting jobs. Barry Zito, now 36 years old, was invited to spring training on a minor-league contract and should hold the attention of die-hard A's fans. And finally, closer Sean Doolittle opens camp with a shoulder injury. Perhaps newcomer Clippard can make a case for winning the closer gig by opening day.