Angel Berroa, who has suffered a steep decline in his playing skills since winning the 2003 American League Rookie of the Year trophy, was optioned Saturday to Triple-A Omaha. Manager Buddy Bell said Tony Pena Jr., who was acquired in a trade Friday with the Braves, would be the starting shortstop, a position Berroa had manned the past four seasons. Berroa has not come close to duplicating his 2003 numbers of a .287 batting average with 92 runs, 28 doubles, 17 home runs, 73 RBIs and 21 stolen bases. In 132 games in 2006, Berroa hit .234 with a .333 slugging percentage and a .259 on-base percentage. He had only 28 extra-base hits and walked just 14 times.