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Nicholas Castellanos headlines a midseason roster makeover in Chicago as Theo Epstein, Joe Maddon & Co. attempt to improve an underachieving team.

Mike Trout -- still just 27 years old -- continued to move up the ranks of the all-time greats this past month. Here's why passing Barry Larkin and other legends is so impressive -- and how he has done it.

Red Sox starter Rick Porcello apologized for taking out his frustrations on two TV monitors in the dugout after he was rocked for six runs in Wednesday night's 8-5 loss to the Rays.

While Indians manager Terry Francona admitted Wednesday he was concerned Trevor Bauer could have had a negative impact on the team had he remained on the roster, Bauer said it doesn't matter since he has been traded to the Reds.

Dodgers top pitching prospect Dustin May will make his major league debut Friday against the Padres, sources told ESPN's Jeff Passan.

The GM and his skipper say their team has enough talent to win it all. With the rival Astros adding yet another ace in Zack Greinke, and the Bombers doing nothing on deadline day, they'd better be right.

Remember that talk about a boring deadline? Well, let's just say things went a little crazy before the dealing stopped. Here's who scored (hint: the Astros!) and struck out (sorry, Yankees) when the dust settled.

The Houston Astros have acquired former Cy Young winner Zack Greinke from the Arizona Diamondbacks in exchange for four prospects.

Yankees general manager Brian Cashman said that he never got close to making any trades to bolster the team's roster prior to Wednesday's deadline. He said the asking prices on pitchers were more than he was willing to give up.

After making a splash with the acquisition of Marcus Stroman, the Mets stood pat at the trade deadline, with GM Brodie Van Wagenen describing their thinking as, "we only wanted to consider moves that were going to improve our club and keep us on mission."

Outfielder Nicholas Castellanos is heading to the Cubs in a trade with Tigers.

Madison Bumgarner "never expected to be somewhere else," and Giants manager Bruce Bochy said he's "happy" to have his ace around after the trade deadline as San Francisco seeks a wild-card spot.

The July 31 MLB trade deadline has officially passed. These are the deals that went down and what they mean for the teams that made them.

The Houston Astros have acquired former Cy Young winner Zack Greinke from the Arizona Diamondbacks in exchange for four prospects.

Outfielder Nicholas Castellanos is heading to the Cubs in a trade with Tigers.

The Braves have bolstered their bullpen by acquiring All-Star closer Shane Greene from the Tigers and Mark Melancon from the Giants.

The Brewers acquired Drew Pomeranz from the Giants and plan to convert the starter into a reliever, while San Francisco also traded reliever Sam Dyson to the Twins.

The Nationals, in need of relief pitching to help their beleaguered bullpen, have acquired Daniel Hudson from the Blue Jays and Roenis Elias and Hunter Strickland from the Mariners.

David Robertson said Wednesday that he needs surgery to repair a flexor tendon in his elbow and may also need Tommy John surgery. Robertson signed a two-year, $23 million deal with the Phillies in the offseason.

Here's the latest intel we're hearing, key names to watch, reaction to completed deals and shopping lists for every team as Wednesday's deadline approaches.