WASHINGTON — Jacob Lopez struck out a career-high 10 batters in 7 2/3 innings, Colby Thomas hit his first major league home run and drove in three, and the Athletics defeated the Washington Nationals 6-0 on Thursday.

Tyler Soderstrom also homered for the Athletics, who took two of three from Washington and have won nine of their last 13.

The Nationals have lost seven of eight and at 45-69 are tied for a season-high 24 games under .500. Washington was outscored 61-23 during its six-game homestand against Milwaukee and the A’s.

Lopez (5-6) didn’t allow a runner past second in the longest outing of his career. He allowed three hits and no walks, and retired his last 11 batters.

Thomas, who debuted June 30 and was playing his 17th career game, ripped Mitchell Parker’s elevated fastball to

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