3. Brian McCann and Charlie Morton (2008)
While Brian McCann overlapped with Ronald Acuña during the catcher's first stint, he overlapped with Charlie Morton while the now-40-year-old starter was just breaking into the bigs.
Morton pitched in 16 games (15 starts) during his rookie season, and B-Mac was behind the plate for all but four of those games.
Morton didn't make the team out of Spring Training in 2009 and was traded for Nate McLouth that June, ending Morton and McCann's time as Braves teammates.
However, it wasn't the last time with the pair as teammates. On November 16, 2017, Morton signed a two-year deal with the Houston Astros that likely changed the trajectory of his career.
The next day, the Astros acquired Brian McCann from the Astros. 11-and-a-half months later, the Houston Astros celebrated their first World Series championship (which was totally not controversial) with Morton on the mound and McCann behind the plate for the final pitch.
4. Charlie Morton and Tom Glavine
On June 12, 2008, the Braves placed Tom Glavine on the DL with a strained elbow. They called up a rookie named Charlie Morton two days later and the 24-year-old made his debut against the Angels.
Glavine wouldn't return to the active roster until August 14, when he made his last start against the Cubs. He would immediately go back on the DL and miss the remainder of the season.
Morton struggled throughout the 2008 season but was on the active roster when Glavine returned, which means the two just happened to overlap on the active roster for, at most, a few days.