OAKLAND — The A’s return to the Coliseum this week not only for their final home stand of the regular season, but with a chance to pop champagne in their own clubhouse.

The magic number to eliminate the Tampa Bay Rays stands at seven games, meaning any combination of seven A’s wins and Rays losses would enable the A’s (90-60) to clinch a playoff berth. With a three-game set against the Los Angeles Angels beginning Tuesday, followed by another three with the Minnesota Twins over the weekend, the scenario where the A’s earn that spot in front of their home fans is a legit possibility.

The last time the A’s popped champagne at home was Sept. 22, 2013 when they clinched the AL West against the Twins.

There were 30,589 people in attendance that day, the type of number that has been hard to crack this year with an average of 18,998 fans over 75 games in Oakland.

A’s manager Bob Melvin is hoping to see a little bit of a bump in those numbers come Tuesday night.

“We’re trying to win as many as we can and put on a good show for our fans,” Melvin said. “Hopefully it’s well-attended and our place is nice and loud. There’s a lot at stake this time in the year and that would be a nice scenario to have at home.”

The matchup with the Angels might have been one for the A’s to dread at one time this season; they started 11-26 against the AL West. Even with their run as the best team in baseball since June 16 with a record of 56-23, the A’s are 33-34 against the AL West.

“If we’re gonna finish up this thing, it’s gonna have to be against the division and we’re gonna have to play well to do it,” Melvin said. “I don’t think these guys think too much about who they’re playing.”

As for the magic number, Melvin said Sunday seven is too big a number to focus on.

“If it gets to three our four, then you have a better idea,” Melvin said. “But I don’t think anybody is thinking about that right now. Maybe it comes a little more into focus once we get home.”

Besides, the A’s still have a chance to win the division, though they didn’t do themselves any favors over the weekend. After losing Sunday, they are 4 1/2 ganes behind Houston. It also doesn’t help that Houston finishes the season with four games against the Baltimore Orioles, who are on pace to finish with one of the worst records in baseball history. Related Articles A’s mailbag: Will the platoon saloon be open in the postseason? What’s up with Khris Davis and Chad Pinder?

Ramón Laureano late homer hands A’s win in LA against Dodgers

Which AL team do the Oakland A’s best match up against in a wild card series?

Frankie Montas may not be ready for a best-of-three postseason start

Who starts for the Oakland A’s in a three-game postseason series?

The wild card is the likely path to the postseason for the A’s, and the big question there is who will host the one-game playoff. The A’s trail the Yankees by 1 1/2 games in that race.

The Yankees have 13 games left, 10 against teams with a winning record, including six against the Boston Red Sox, who boast the best record in the majors.

The A’s have 12 games left, but only three are against teams with a winning record.