OAKLAND, Calif. — A.J. Pierzynski has declared himself fit to return to the Texas Rangers’ lineup, but there’s one fairly significant problem.The catcher can’t be reinstated from the 15-day disabled list until Tuesday, even though he is no longer feeling pain in his strained right oblique.So, he will make the best use of the downtime. He swung a bat for a third straight day Tuesday, taking soft toss from hitting coach Dave Magadan on the field at O.co Coliseum.Pierzynski said that the plan is for him to take live batting practice Thursday and Friday before heading out for a two-game medical rehabilitation assignment Sunday and Monday, likely at Double A Frisco.“We’ve just got to see how he feels and make arrangements according to that,” said manager Ron Washington, who watched Pierzynski hit Tuesday. “I didn’t see him holding back. He looked like he was getting through the ball fine.”Pierzysnki remains frustrated that he had to go on the DL in the first place, but isn’t holding a grudge against those who decided to sideline him. He knows the Rangers couldn’t keep playing without two catchers.“They also knew that if I didn’t go on the DL, I’d keep going out there,” Pierzynski said. “I’m ready to go. The trainers did a great job of getting it.”Andrus fineRon Washington and trainer Jamie Reed headed out to second base late Monday night after they noticed that shortstop Elvis Andrus was grabbing at his right hamstring behind the knee.Andrus remained in the game after stealing second base and was in the Rangers’ lineup Tuesday after feeling tightness that often pops up in cool conditions.The bigger issue in Washington’s mind was why Andrus was trying to get an extra base with the Rangers down 5-1 and the middle of the lineup coming to the plate.“I’d much rather see him stay there in that situation,” Washington said. “And when I got out there, I told him, ‘Don’t try to steal third. Stay there.’”Darvish fine-tuningRight-hander Yu Darvish held his normal between-starts State of the Yu address with the media Tuesday ahead of his matchup Thursday against 2011 Cy Young winner Justin Verlander.Per usual, Darvish declined to go into great detail about his excitement level heading into an anticipated pitching matchup against a Detroit team that features reigning MVP Miguel Cabrera and Prince Fielder.Darvish, though, did address his satisfaction level after eight starts. He is 6-1 with a 2.73 ERA, a major-league-leading 80 strikeouts and a .163 opponents batting average.There’s room for improvement.“The number of wins and the number of strikeouts, I’m not really concerned about,” Darvish said. “That’s something I have to look back to once the season’s over. Since my ERA is not 0.00, that’s what I have to improve on. I’m just making sure that I’m healthy to throw for the rest of the season.”Briefly• Yu Darvish has donated $25,000 to City of Dallas RBI, a program that helps nearly 2,000 youth play organized baseball. The Rangers will host RBI Day on June 16 at Rangers Ballpark, with participants from Fort Worth, Dallas, Lancaster and Austin receiving admission to the game.• Left fielder David Murphy said that he was having trouble getting his bruised back to loosen up three days after crashing into the left-field wall at Minute Maid Park. But he was in the lineup for a third straight game and was carrying an eight-game hitting streak.