OAKLAND, Calif. -- Right-hander Jesse Chavez allowed two runs over eight-plus

innings, third baseman Josh Donaldson hit a tie-breaking two-run homer, and the Oakland

A's held on for a 5-4 victory Monday night against the Chicago White Sox in the opener

of a three-game series.

The A's won their season-high fifth straight game, moved a season-best nine games

over .500 and improved to 24-15, matching their best record after 39 games over the past

24 seasons.

The White Sox (20-20) lost their third straight game and for the fourth time in their

past five games.

White Sox designated hitter Jose Abreu hit his major-league leading 14th home run, a

solo shot to right field off Chavez, leading off the ninth and igniting a three-run

rally. Chicago right fielder Dayan Viciedo hit a solo home run in the second.

Chavez (3-1) allowed four hits, walked two and struck out seven, getting the White

Sox to chase his sharp-breaking curve. He bounced back from a rough start Tuesday

against Seattle when he gave up four runs on seven hits over 5 2/3 innings in an 8-3

loss to the Mariners.

Chavez came out firing strikes against the White Sox. Through the first four innings,

he threw first-pitch strikes to 13 of the 16 batters he faced. Thirty-eight of his 50

pitches during that span were strikes. He needed only 90 pitches to get through eight

innings, and A's manager Bob Melvin sent him back to pitch the ninth.

Abreu crushed an 0-2 pitch into the right-center-field seats, ending Chavez's night.

A's left-hander Fernando Abad walked Adam Dunn, and he gave way to right-hander Jim

Johnson. Viciedo greeted Johnson with a ringing double, moving pinch runner Moises

Sierra to third. Then Alexei Ramirez lined a single to left, driving in Ramirez, moving

Viciedo to third and ending Johnson's night.