Frazier's four home runs were tied with Rockies third baseman Nolan Arenado and Mets first baseman Lucas Duda for the most in the NL. He also ranked among the league leaders in doubles (four, tied for first), on-base percentage (.560, second), hits (11, tied for second) and RBIs (seven, tied for third).
With Frazier leading the way, the Reds pulled off a three-game sweep of the Nationals over the weekend. He went a combined 8-for-12 with two homers and three RBIs in that series, capped off by a three-hit, two-RBI performance in Sunday's 8-2 win at Great American Ball Park.
Frazier ended the week on a four-game hitting streak, all of them multihit outings, as he became the first Cincinnati player to win a weekly award this season.
The 2014 All-Star currently ranks second in the NL behind Washington's Bryce Harper with 16 homers, and Frazier's .624 slugging percentage ranks third behind Harper and D-backs first baseman Paul Goldschmidt.
Adam Berry is a reporter for MLB.com. Follow him on Twitter at @adamdberry. This story was not subject to the approval of Major League Baseball or its clubs.