Detroit lost its ninth straight this afternoon.
The Tigers haven't lost 10 in a row since their 119-loss season in 2003.
Sean Manaea pitched six strong innings and Oakland beat Detroit to sweep the four-game series.
The A's went 8-2 on their three-city road trip and have won 10 of 12 overall.
Michael Fulmer (3-7) gave four runs and nine hits. He is 1-3 in his past six starts.
The Tigers are in Toronto tomorrow to start a weekend series with the Blue Jays.
— with files from Metro Source