Barack Obama becomes the first U.S. president to visit the National Baseball Hall of Fame and Museum in Cooperstown. During his visit, the Commander in Chief, a White Sox fan, holds FDR’s green-light letter and a pair of spikes worn by Chicago’s “Shoeless” Joe Jackson, who was one of the eight players banned from the game for their alleged role in fixing the 1919 World Series.

The Brewers badly botch a pitching change in the 7th inning of a 5 – 4 loss to Atlanta. Manager Ron Roenicke goes to the mound after pinch-hitter Ryan Doumit is announced into the game and summons lefthander Will Smith to replace Brandon Kintzler. Problem is, no one is warming up in the Brewers’ bullpen. Smith has to rush to the mound and only gets the maximum 8 pitches to get ready. Doumit then rips a single to left, bringing in the tying and go-ahead runs. Roenicke blames the foul-up on miscommunication with Rick Tomlin, filling in as pitching coach in the absence of both Rick Kranitz and bullpen coach Lee Tunnell.

White Sox ace Chris Sale is sparkling in his return from the disabled list as he retires 18 of 19 Yankees batters he faces over 6 innings to lead the Sox to a 3 – 2 win. Zoilo Almonte soils the no-hit bid with a two-out single in the 6th as Sale improves to 4-0.

The A’s manage only one hit, a fourth-inning solo home run from Brandon Moss, but it is enough to beat Tampa Bay at Tropicana Field, 3-2, for their fifth straight and 11th victory in its past 12 games. Oakland is the first American League team to win with a home run as its only hit since Jim Thome’s solo shot in 2006 gave the White Sox a 1-0 victory over the Cardinals at U.S. Cellular Field.

What does the Cubs’ Jeff Samardzija have to do to get a win? Today, the major leagues’ ERA leader pitches 7 scoreless innings, but Hector Rondon blows a 2 – 0 9th-inning lead against the Yankees to send the game into extra innings. In the 13th, Yankees pitcher Preston Claiborne lays down a perfect sacrifice bunt in his first major league plate appearance as part of a two-run rally, Jose Veras throws a wild pitch to let in a first run and back-up catcher John Ryan Murphy drives in another with a single as the Bronx Bombers end up on top, 4 – 2. Samardzija is 0-4 in spite of a 1.46 ERA.

Mike Hessman of the Toledo Mud Hens connects for his 400th minor league homer, against Scott Diamond of the Rochester Red Wings in an International League contest. Hessman is only the 8th player to reach the mark, and the 4th to do it entirely in U.S.-based leagues, as the top four minor league home run hitters of all time all spent the bulk of their career in Mexico.

At age 55, Julio Franco returns to professional baseball with a 1-for-3 night for the Fort Worth Cats of the independent United League. Hired for the Cats’ current homestand as a player-coach, Franco has now played in five decades, having started in the minor leagues in 1978 until his retirement in 2008.

Chris Davis has a three-homer day to lead the Orioles to a 9-2 win over the Pirates. The second three-homer game of his career doubles his total for the year, a far cry from his breakout season in 2013 when he hit 9 long balls in April alone on his way to 53, tops in the majors and a Baltimore club record.

Masahiro Tanaka suffers his first loss in the majors when the Cubs beat the Yankees, 6 – 1, behind Jason Hammel. Tanaka was unbeaten in 42 straight regular season starts, since August 19, 2012, including a perfect 24-0 season in Nippon Pro Baseball in 2013, although he had lost a postseason start during the streak.

The Tigers see their 11-game road winning streak ended after a very long day. Having been delayed in leaving Boston, MA, they arrive in Cleveland only three hours before game time, then extend the game when J.D. Martinez hits a pinch homer in the 9th to require extra innings. However, Michael Brantley hits a walk-off homer off Al Alburquerque in the 10th to end the game, 5 – 4.