With the Boston Red Sox making improvements to their starting rotation, the team has reportedly expressed some interest in dealing veteran Clay Buchholz.

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A pair of high-profile free agents—Aroldis Chapman (New York Yankees) and Ian Desmond (Colorado Rockies)—both came off the market Wednesday, but Chicago was once again the center of the baseball universe, as both the Cubs and White Sox pulled off notable trades on Day 3 of baseball's winter meetings.

Free-agent outfielder Ian Desmond is joining the Colorado Rockies. 

After a relatively quiet first day at the winter meetings, Tuesday afternoon was anything but, as we saw one of the biggest blockbuster trades in recent memory.

The Chicago White Sox finally found an offer to their liking for ace Chris Sale, shipping him to Boston in exchange for a package of four prospects headlined by infielder Yoan Moncada and right-hander Michael Kopech.

Chicago White Sox starting pitcher Jose Quintana could become the next marquee player to leave the organization as the front office continues to shop assets following the trade of ace Chris Sale.

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Let's talk closers.

Coming into this offseason, it was always clear that this particular free-agent market was going to be headlined by a strong closing class, and players like Aroldis Chapman and Kenley Jansen have been at the center of much of the buzz thus far.

From Roberto Clemente (1954) to Johan Santana (1999), some special players have found their way to the big leagues through MLB's Rule 5 draft. As usual, this year's iteration represents the last major event of the annual winter meetings, and it is scheduled to begin at 9 a.m. ET Thursday.

How does it all work? Who is eligible? Here's everything you need to know, courtesy of MLB.com's Jonathan Mayo:

Free-agent first baseman Mitch Moreland is one of the more appealing options on the market for teams looking to add power to their lineups.

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The Boston Red Sox acquired relief pitcher Tyler Thornburg from the Milwaukee Brewers on Tuesday in exchange for a package headlined by third baseman Travis Shaw. 

The Brewers officially announced the trade, which also includes shortstop Mauricio Dubon and starting pitcher Josh Pennington joining the Milwaukee organization.

Shaw posted a message on social media about the deal:

New York Yankees legend Derek Jeter will have his famed No. 2 jersey retired by the storied organization before the team's game against the Houston Astros on May 14, 2017. 

The Yankees made the announcement official Tuesday morning: