During his stint with the first-place IronPigs this season Featherston hit.270 with three home runs playing left, first, second, and third. The next batter, Michael Martinez, reached base on an infield single to second.
Tanaka, 28, will start in a road game against the Los Angeles Angels on Monday night instead of starting Sunday afternoon at home against the Baltimore Orioles.
That included getting Longoria on a routine pop fly to right after the third baseman had made life hard for the A's in both ends of the doubleheader. Righties have a better average against him, but they almost never walk compared to lefties who walk twice as much but don't get nearly as many hits.
The rookie also collected his first career RBI by contributing a run-scoring fly ball in the ninth inning.More news: Athletics-Bolt treasured by Jamaicans not only for his speed
The 2016 Gold Glove victor left the Rays' game Thursday night against the Chicago White Sox after jamming the hip while trying to beat out an infield hit in the fifth inning. Once considered the Atlanta Braves' center fielder of the future, Smith was traded to the Seattle Mariners for pitching back in January and on the very same day to the Rays for prospects.
Yonder Alonso had four hits for Oakland in the nightcap and seven over the doubleheader.
A's manager Bob Melvin in particular liked the way his second-year starter navigated his way through traffic in the seventh inning, with his pitch count approaching 100.
Austin Pruitt (5-1) won in relief and Liam Hendriks (2-1) took the loss in the opener.More news: With time running out, Florida Legislature remains split
Cobb (5-5), coming off a start Saturday at Seattle in which he allowed nine runs and 14 hits over five innings, gave up one run and four hits.
Matt Andriese (5-1, 3.45 ERA) will come off the disabled list and make his 12th start of the season.
The slugger went on the DL on April 28 with a strained left hamstring and then took a break of almost two weeks after he had tightness in his right quadriceps. He was replaced by Chih-Wei Hu. There was a video tribute to Adam West, TV's Batman, who died Friday night at 88.
Andriese left Saturday's game with a right groin strain, Steve Carney of Sports Radio 620 WDAE reports.More news: Rain lashes Australia's Champions Trophy chances
Kiermaier underwent a CT scan Friday and was put on the 10-day disabled list. C Wilson Ramos (recovery from torn ACL) may soon have his rehab upgraded from Class A Charlotte to Triple-A Durham.