Loaiza, 34, was jailed early Wednesday after he failed a sobriety test near San Lorenzo, said California Highway Patrol spokesman Mike Wright. He was released from jail later that day.
The Alameda County district attorney's office said it decided Thursday to press misdemeanor drunken driving and excessive speed
charges against the right-hander. He was scheduled to appear in
court July 14.
"This is a very serious situation," A's manager Ken Macha
said. "You hope everybody takes care of their well-being. I asked
him how he was doing, and he said he was all right. He's concerned
with what may happen."
Loaiza, 1-3 with a 6.89 ERA, took the mound Thursday against the Mariners, his second start since coming off the disabled list.
Loaiza signed a three-year, $21 million contract with the A's in November after playing with the Washington Nationals in 2005.