The 31-year-old Aceves split last season between the Boston Red Sox and Triple-A Pawtucket. He was 4-1 with a 4.86 ERA in 11 games (six starts) last season with the Red Sox and 4-2 with a 4.25 ERA in eight starts with 48 2/3 innings at Triple-A Pawtucket.

Over his six-year career in the major leagues, Aceves has been mostly a relief pitcher. He has a 30-14 career record with a 3.69 ERA and 29 saves — including 25 in 2012 with Boston. It is unclear whether the Orioles will try him as a starter or a reliever.

Two ‘Sunday Night Baseball’ games in first half

The Orioles are scheduled to play twice on ESPN Sunday Night Baseball in the first half of the 2014 season, the network announced Wednesday.

On April 20, the Orioles’ game against the Red Sox at Fenway Park will be televised at 7 p.m. The Orioles will also host the Yankees on July 13 at Camden Yards in the final game before the All-Star break. That game is set for 8 p.m.

Major League Baseball also released game times Wednesday for the majority of the 2014 regular season schedule.

Around the horn

Last year’s first-round pick Hunter Harvey, as well as right-hander Parker Bridwell, threw bullpen sessions Wednesday with Showalter, new pitching coach Dave Wallace and bullpen coach Dom Chiti watching. Right-hander Kevin Gausman is expected to throw a bullpen session Thursday. … Free-agent hitter Jack Cust continued his tryout with the club Wednesday, taking batting practice from live pitching. He expects to be back Thursday before the team makes a decision on whether to offer him a minor league deal. … Free-agent catcher Shawn Riggans, who played for the Rays from 2006 to 2009, had a one-day tryout with the club. Riggans, who had labrum and rotator cuff surgery in 2011, is hoping for a minor league deal. … Former All-Star closer Bryan Harvey, who has been around camp for the past two days accompanying his son, Hunter, spoke to right-handers Steve Johnson and Tommy Hunter and showed them his split-fingered fastball.