A Washington Nationals' all-star may have just gained a new fan from the opposition.

Max Scherzer took time from practice for a quick game of catch with a young Mets fan.

Joe LaRocca, Sr. captured the once-in-a-lifetime moment on video as his son, who is also named Joe, tossed a baseball back and forth with Scherzer.

It all started, according to Fox Sports, when the younger Joe, who was decked out head-to-toe in Mets gear, told Scherzer "Hey Max, great game last night!"

Scherzer kept the Mets to two runs Tuesday and struck out 10. Earlier this month, the ace pitcher tied a single game strikeout record with 20 against the Detroit Tigers, Fox Sports reported.

The Nats beat the Mets 7-1 Wednesday night.

The same night, another Nationals' star, Bryce Harper, made a different kid's night, The Washington Post reported.

The small fan was told he had to return a bat that went flying into the stands during the ninth inning. When Harper realized the kid wasn't going to be allowed to keep the Wilson Ramos bat, Harper had one of the reporters hand-deliver one of his own bats to the child.