OAKLAND, Calif. — The rotation CC Sabathia rejoins Friday night against the A’s at the Oakland Coliseum is a lot different from the one he left May 6 due to a left groin injury.

Luis Severino joined Sabathia on the shelf with a strained right triceps May 14. Masahiro Tanaka hasn’t pitched well in his last two starts, which he made on four days’ rest instead of the five he and the Yankees prefer. Chad Green was summoned from Triple-A Scranton/Wilkes-Barre to make his major league debut Monday against the Diamondbacks and got spanked. Ivan Nova, who started against the A’s on Thursday night, took Sabathia’s spot.

Nathan Eovaldi has won his last three starts and is 4-2, but Michael Pineda has been awful. He is 1-5 with a 6.60 ERA in eight starts, and if the Yankees had somebody to turn to — they don’t — Pineda’s spot in the rotation would be in trouble.

The Yankees have to hope Sabathia can approach what he did in his final outing before going on the DL. On May 4 at Baltimore, the veteran lefty beat the Orioles 7-0. In seven innings, he allowed six hits, walked two and fanned six. And he held the Birds’ hitters to one hit in eight at-bats with runners in scoring position.

“I have felt good in the bullpen and the simulated game,” Sabathia said Thursday afternoon. “I hope to throw the ball well [Friday]. I was able to play catch every day and work on things in the bullpen. I am hoping to keep building on what I had a few weeks ago. I am healthy and ready to go.”

In the previous start against the Rangers in Texas, Sabathia wasn’t as good, but he went six innings and gave up three runs and five hits in a 3-2 loss.

Sabathia is 2-2 with a 3.81 ERA in five outings, none of which can be described as terrible.

Because he is from nearby Vallejo, Sabathia’s ticket demand is always great when he pitches at the Coliseum, where he is 4-7 with a 5.44 ERA in 15 starts and winless in his last three outings.

As a young pitcher, Sabathia may have tried too hard against the A’s. That approach has changed over the years.

“Now it just costs me money to play here,” said Sabathia, whose mother takes care of the tickets, which the pitcher said are in the $75-$125 range.

Alex Rodriguez ran the bases before Thursday’s game but wouldn’t commit to coming off the DL Saturday. He has been on the shelf since May 4 with a strained right hamstring.

“Saturday is still probably a question mark,” Joe Girardi said. “My hope is we will see. He went a little bit faster today on the arcs but still not where he needs to be.”

Rodriguez was encouraged by the progress but wasn’t ready to predict when he would play again.

“Every day it gets 5 percent better. The key is to be patient and smart so that when I come back it’s for good and I can help the team win,” Rodriguez said. “Today was a huge step. I ran home to first four times and first to third four times. I haven’t felt anything in a while.”

As for playing Saturday, Rodriguez said he couldn’t tell.

“I can’t predict, but I can tell the last two days I felt better each and every day,” said Rodriguez, who is hitting .194 (14-for-72) with five homers and 12 RBIs in 20 games.

Girardi said Severino likely would need a minor league rehab start before he comes off the DL and that it will take the right-hander longer than 15 days to return.

As for Severino losing his spot in the rotation when healthy, Girardi avoided the topic.

“We haven’t talked about any changes,” Girardi said. “He is one of our starters.”

Severino is 0-6 with a 7.46 ERA in seven starts.

Mark Teixeira’s struggles from the left side have been addressed for most of the season, but possibly the most alarming aspect of the lengthy slump is 32 strikeouts to 12 hits from the left side.

On Wednesday night, it appeared Teixeira was about to be rewarded with an extra-base hit when he sent a line drive to right, but Brandon Drury made a running catch on the warning track before crashing into the fence.

The next four at-bats against righties didn’t go so well — Teixeira went hitless and struck out three times.

Including this year’s numbers, Teixeira has 998 strikeouts to 1,212 hits as a left-handed hitter in his career.

“He just hasn’t been able to get going,” Girardi said of Teixeira against right-handers. “I am going to bet on him to get going.”

Teixeira was out of the starting lineup Thursday night against A’s righty Kendall Graveman, but came on in the eighth for defense.

It wasn’t going to be Thursday night against the A’s because Girardi opted to rest Teixeira and played the left-handed-hitting Dustin Ackley against right-hander Kendall Graveman.

“I am just off enough, too many ground balls,” said Teixeira, who was hitting .148 (12-for-81) from the left side and .288 (15-for-52) from the right side, where he has whiffed nine times.

Entering Thursday night’s action, Teixeira hadn’t homered in 108 at-bats. His last homer was April 13.