At Wrigley Field, Mike Schmidt hits four home runs in one game, including the game winner as the Phillies come back from an 11-run deficit to beat the Cubs in 10 innings, 18-16.
2 of 6AP
At George Steinbrenner's insistence, Thurman Munson is named Yankee captain. The relucant backstop is the first player to assume the role since Lou Gehrig was honored with the position in 1935.
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The Denver Nuggets' frontcourt of Alex English (pictured, 25.4 ppg), Dan Issel (22.9 ppg) and Kiki Vandeweghe (21.5 ppg) become the first trio to each average more than 20 ppg since Bob Pettit, Cliff Hagan and Clyde Lovellette of St. Louis in 1961.
4 of 6Walter Iooss Jr./SI
Philadelphia's Julius Erving becomes the third NBA player to score 30,000 points.
5 of 6AP
Atlanta's Dominique Wilkins becomes the 11th player in NBA history to score 22,000 career points after hitting 41 in the Hawks' 110-107 setback against Charlotte.