Astros ace Greinke deal

Out of nowhere, the Houston Astros got a huge head start on October.

On a dizzying day that featured two dozen trades, the Astros pulled off the biggest and most startling deal, adding ace Zack Greinke to an imposing rotation already loaded with All-Stars Justin Verlander and Gerrit Cole.

Plenty of familiar names were on the go Wednesday — Shane Greene and Mark Melancon boosted the Braves’ bullpen, with Scooter Gennett, Jesús Aguilar and Mike Leake also moving.

But it was the Astros’ acquisition of Greinke from Arizona for four minor leaguers that quickly became the talk of baseball. The deal came right before the deadline for swapping players to still have them eligible for the postseason.

“We had him high on our list and we didn’t know this was even remotely possible and it really wasn’t until the last 48 hours and really the last 24 hours that we started to get traction on something,” Houston general manager Jeff Luhnow said.

The AL West leaders and 2017 World Series champions added two other pitchers, too, getting starter Aaron Sanchez and reliever Joe Biagini from Toronto.

“Houston made some big deals. They’re really good. They were good before,” Red Sox President of Baseball Operations Dave Dombrowski said.

A lot of contenders were busy. The Cubs added Detroit’s Nicholas Castellanos to their lineup, and the Nationals added relievers Daniel Hudson, Roenis Elías and Hunter Strickland.

Several players whose named swirled in the tradewinds stayed put. Giants ace Madison Bumgarner, Mets starters Noah Syndergaard and Zack Wheeler, and Pirates closer Felipe Vázquez remained in place.

“Nothing changed for me. I never expected to be somewhere else until that happened,” Bumgarner said. “I just have a job to do and I’m going to do it. We’re going to miss a few guys we got rid of. That’s going to be tough.”