Kila Ka'aihue insists "all wins are big wins."

Sure, but Wednesday's 5-4 victory fueled by Ka'aihue's walk-off RBI bloop single in the 14th inning, likely puts it in the "bigger" category.

"How do I describe it?" said Ka'aihue. "We scored one more run than they did. That's what happened."

Ka'aihue's big hit followed a two-run homer off the bat of Yoenis Cespedes that wiped away a 4-2 Chicago lead, making a winner out of Jim Miller, freshly promoted from the Minors just hours earlier and inserted into the game with two outs in the 13th.

"It's a game of perseverance," A's manager Bob Melvin said. "You truly have to know you have outs left. We were down, then up, then a stalemate for a long time, and then all of a sudden they get two and we get three. Using every out we had, definitely."

The A's (10-10) found the .500 mark again and picked up the series victory, along with a dose of momentum as they prepare for their upcoming nine-game road swing through the East Coast.