WEST SACRAMENTO, Calif. — Colby Thomas, Zack Gelof and Tyler Soderstrom homered to back a strong start by Aaron Civale and the Athletics beat the Cleveland Guardian 7-1 on Sunday to avoid a series sweep. Thomas hit his first home run of the season, leading off the second against rookie Parker Messick (3-1) for a 1-0 lead. The Athletics plan to move to Las Vegas in 2028, when they are scheduled to open play at a new ballpark on the Strip. Rookie Chase DeLauter hit his sixth home run — and first since April 3 — going the opposite way to left field to tie it 1-all in the fifth and extend his hitting streak to eight games. DeLauter went 8 for 11 in the series. Messick retired nine in a row following Thomas’ shot until Gelof and Soderstrom hit back-to-back homers leading off the Athletics fifth. It was the second homer for Gelof and the fourth for Soderstrom, who went 3 for 4.…