His last bullpen session on Wednesday was cut short due to discomfort in his right elbow; Pavano had originally complained of tightness in his right forearm that prevented him from getting loose as he tossed.
Yankees manager Joe Torre said that he hadn't heard any information and would wait to hear what Andrews' diagnosis would be, but the suggestion has been floated by several media outlets that Pavano could require Tommy John elbow ligament replacement surgery.
If that is the case, Pavano would certainly miss the remainder of the 2007 season and most of next year; the typical recovery process for pitchers following the surgery is 12-18 months.
"I think he's going to go along with whatever the doctor suggests," Torre said. "Certainly, he isn't having any fun doing what he's doing. If surgery is the only answer to changing that, then I think he'll probably consider it."
Pavano missed the better part of 1 1/2 seasons before returning to the mound this season, making two starts and picking up his first victory since May 2005.
Over the course of his contract with the Yankees, Pavano has provided the Yankees with 19 starts and five victories, numbers that Cashman admitted have not added up to their projected investment.
"It clearly hasn't worked out," Cashman said. "There's no doubt about that. We signed a player that we expected to be a horse in our rotation, and it hasn't worked out. He physically hasn't held up, period."
When asked if he regretted the decision, Cashman replied: "I can't go back and do it differently. It makes no sense to answer that question at this stage."
Tale of the tape: Yankees right fielder Bobby Abreu -- in the midst of a skid that has seen him notch just four hits in his last 45 at-bats, including a 1-for-9 performance in Thursday's doubleheader -- said he is studying videotape of his 2006 Yankees at-bats to find clues.
Abreu said that he has seen some encouraging signs since the video search began recently with hitting coach Kevin Long. Abreu, who was inserted into the lineup Friday as the designated hitter, said that his ability to take the ball the opposite way to left field could be a key in snapping out of the funk.
"You've just got to go up there and be positive, and at least try to make contact," said Abreu, who entered action Friday batting .236. "Whatever's going to happen is going to happen. You keep it strong and never give up."
Torre said that he tried to help Abreu out twice during the doubleheader at Texas by putting on a hit-and-run, but both times, Abreu wasn't given a pitch worth hitting.
"He's hit some balls hard," Torre said. "Right now, he's fighting himself. He's not as selective."
Abreu stroked a ground-rule double in his first at-bat Friday as the Yankees batted around against Mariners starter Cha Seung Baek, then struck out looking in the second inning.
Take a day: Torre said he concocted Friday's lineup accounting for the expected absence of designated hitter Jason Giambi, who was pulled from the second game of Thursday's doubleheader after three innings with leg cramps.
Upon arriving at Yankee Stadium on Friday, Giambi told Torre that he was still feeling a bit of soreness.
"He's available," Torre said. "If we need a pinch-hitter, he can probably play."
The waiting game: Phil Hughes has some time on his hands, awaiting a New York examination on the strained left hamstring that ended his bid at a no-hitter on Tuesday in Texas.
Hughes, 20, said that he has pulled his hamstring once before, but never pitching -- his last such injury came as a batter for Foothills High School in Santa Ana, Calif., while running out a ground ball.
Then, the injury took three to four weeks to heal, Hughes said. The Yankees have estimated that Hughes' current strain will take four to six weeks.
"I remember when I did it in high school, it hurt a lot more at the time," Hughes said, "but three or four days later, it felt about the same as it did now."
Hughes was at 83 pitches when he threw his final pitch, a curveball to Texas' Mark Teixiera with one out in the seventh inning. He speculated that he might have run into pitch-count trouble if he'd been able to continue, but he said wondering about his ability to finish the no-hit bid was "kind of a moot point."
"It's frustrating, but I try not to think back too much and think about what could have been," Hughes said.
Coming up: The Yankees will play the second game of their four-game series with the Mariners on Saturday, facing off in a 3:55 p.m. ET start on FOX.
Right-hander Chien-Ming Wang (0-2, 5.84 ERA), pushed back a day to deal with a cracked fingernail on his right middle finger, will draw former Yankees right-hander Jeff Weaver (0-4, 18.26 ERA) as a mound opponent.