ARLINGTON (AP) - John Buck drove in three runs and Jorge De La Rosa struck out seven Saturday night in his Kansas City debut to lead the Royals to a 5-3 victory over the Texas Rangers, whose losing streak reached a season-worst six games.

All-Star outfielder Carlos Lee went 3-for-4 with a walk in his second game since being traded from Milwaukee to Texas (51-53), which dropped three games behind division-leading Oakland in the American League West.

Gerald Laird and Mark DeRosa hit home runs on consecutive pitches in the second for the Rangers, but those were the only runs allowed by De La Rosa (1-0) despite giving up nine hits over six innings. The seven strikeouts were a career high.

The Royals got De La Rosa on Tuesday in a trade with Milwaukee, where the left-hander was 0-2 with an 11.57 ERA in three starts. De La Rosa was 0-5 in eight previous major league starts.

Ambiorix Burgos worked the ninth for his 16th save in 25 chances.

Kansas City, with the worst record in the majors, won the first two games of the series by beating the Rangers