OAKLAND -- The A's partied like it was 1989 on Saturday night before a record Coliseum crowd, edging the Giants in walk-off style in the 11th -- only after enduring a bizarre sequence in the top half of a wild ninth inning.
The celebration began long before their 4-3 victory; hours earlier, they reveled in their return from the Mets, acquiring veteran closer Jeurys Familia to bolster an already solid bullpen down the stretch.

Then A's alumni took to the field; Rickey Henderson, Dennis Eckersley and Jose Canseco were among those who gathered for a belated championship parade -- the one they never got following their sweep of the Giants in the 1989 World Series, which was interrupted by the Loma Prieta earthquake.
The A's capped the eventful day with their first post-break win, getting a game-ending single from Jonathan Lucroy in front of the largest baseball crowd in Coliseum history (56,310) to pull within three games of the second American League Wild Card spot amid a 22-7 stretch.
"It's fun being on the field for that," Lucroy said. "Any time you get that energy from the crowd, it really is a special time. I wish we could do that every night here because it's a lot of fun."

Oakland closer Blake Treinen suffered a rare blown save when the Giants orchestrated the oddest of rallies. A wild pitch on a swinging third strike with two outs in the ninth eluded catcher Josh Phegley and put Alen Hanson on first, and he came around to score the tying run when Hunter Pence drove a double off first baseman Matt Olson's glove that landed in the visiting bullpen.
Right fielder Stephen Piscotty retrieved the ball while having to maneuver around a chair that Giants reliever Mark Melancon was moving. The A's argued interference but lost the challenge, leaving them work to do after mustering just two hits in their first eight innings.
"It's always been a little sketchy down there with the chairs being moved and guys sitting outside of that area and so forth," A's manager Bob Melvin said. "I was looking for some sort of interference, and the rule is unless it was intentional, you play it."

Undeterred, the A's kept at it, enjoying their fifth walk-off win of the season.
They loaded the bases in the ninth only for Marcus Semien to ground into an inning-ending double play and wouldn't stage another threat until the 11th, when Matt Chapman and Chad Pinder teamed up for consecutive two-out singles ahead of Lucroy's knock.
"Good teams win any way they can," Lucroy said. "Good teams are going to win early, they're going to win late. We've done both this year. The best teams win late when everything's on the line, in my experience at least.
"If we can keep on doing what we're doing, staying consistent, doing all the little things we have to do to win ball games … I think we're just going to grind along and sooner or later someone's going to get you in the lineup. We're going to play solid defense, and we're going to pitch. Hopefully we can keep doing that. If we keep doing that I really believe we'll be there in the end."
MOMENTS THAT MATTERED
The A's took advantage of Madison Bumgarner's wild ways in the fifth, drawing four walks from the southpaw to go ahead, 2-1, and deny him a chance to extend his streak of completing at least five innings to 90 games. Mark Canha's double-play ground ball against right-hander Sam Dyson extended the A's lead.
"The walks were key in that inning," Melvin said. "We got just enough to get a lead. Obviously they came back and tied it up. And then we got some big hits after that. The key to that game was making him work and getting him out of there."

Trevor Cahill, meanwhile, held the Giants to one run across 5 2/3 innings, his lone mistake a solo homer to Brandon Belt in the fourth. The veteran starter got an assist from lefty Ryan Buchter, who was summoned with the bases loaded and promptly struck out Brandon Crawford to end the sixth and maintain the club's two-run advantage.

SOUND SMART
By pulling out a victory in extras, the A's remain the only Major League team undefeated when leading after seven innings (39-0). Treinen totaled 40 pitches in two innings, the most since he threw 44 on April 18. Melvin acknowledged that Familia's impending arrival eased his decision to extend his closer so far.
MITEL REPLAY OF THE DAY
There was no argument that Pence's hit was a double. However, the A's wanted it officially called a ground-rule double on account of interference, which would have held Hanson at third. However, replay officials confirmed that the "live ball" ruling on the field stood.
"The ruling kind of defied some common sense, I thought, but accidental or not, there's obstruction on the play and that shouldn't be my fault," Piscotty said. "I shouldn't be penalized for that I felt like, so it is what it is."

UP NEXT
The A's and Giants will close out the Bay Bridge Series with a 1:05 p.m. PT matinee matchup on Sunday. Lefty Sean Manaea, who pitched to a 9-6 record and 3.42 ERA in the first half, gets the ball for the A's, while the Giants counter with right-hander Johnny Cueto (3-1, 2.36 ERA). Manaea was the winning pitcher in a July 15 victory in San Francisco, holding the Giants to two runs in six innings.