Orioles top pitching prospect Dylan Bundy, who is rehabbing in Sarasota from Tommy John surgery last June, will throw his second 40-pitch bullpen session that will include breaking balls today. He began throwing breaking balls in his session Wednesday, throwing eight curveballs. That number will increase gradually. … Left-hander Johan Santana, recovering from his second shoulder surgery in a three-year span, is also expected to throw a bullpen session. He remains on a five-day schedule to simulate a spot in the rotation, and the team is monitoring his recovery days. Santana is also working on his fastball velocity, which is now in the mid-80s. … Left-hander Troy Patton pitched a scoreless inning for Norfolk on Thursday, striking out one batter. He threw seven of his eight pitches for strikes. … With two RBIs Thursday, Nelson Cruz now has 23 in April, the first time in his career he has posted 20 or more RBIs in the month. Miguel Tejada holds the club record for RBIs in April with 31 in 2005. … On Wednesday, Cruz hit a grand slam and a solo home run, becoming the first Orioles player to hit two homers in a game since Ryan Flaherty on Sept. 25. … The Orioles are 11-5 when they do not record an error and 0-5 when they make at least one error.