Though the A's outhit the Angels, 8-1, Los Angeles' lone hit resulted in two runs. Kole Calhoun hit a home run to right-center to drive in Drew Butera, who reached base on Brett Lawrie's throwing error to open the third inning.
"A sinker that came back," said Chavez. "Just tried to crisscross in and out with him, not let him get his hands extended. Ball was a little bit up. I should have went with a four-seam instead of a two."
Chavez walked two of the next three batters but settled down to retire each of his final 10, finishing at 90 pitches and striking out four in his first start of the season -- following four relief appearances -- in place of Jesse Hahn, who is dealing with a blister on his pitching hand.
"We were looking at maybe 80 to 85 [pitches] and he gives us 90 and gives up one hit," said Melvin. "Certainly did his job."
"I feel a little tired, but I didn't see any velocity loss," said Chavez. "That's my big thing. I look back, and today it was the same from the first pitch to the last, and that was something that was really surprising and good to see.
"Very encouraging. Had three weeks off of not being extended, and then to go out and throw 90 pitches and have the same stuff, same from the first hitter to the last one, that's all I wanted to do."
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.