Purdue has signed 7-foot-2 center Isaac Haas to a national letter of intent. The news comes one week after incoming freshmen could first sign with colleges - and one week after coach Matt Painter promised to add a center to his recruiting class. Haas averaged 18.5 points, 11.0 rebounds and 4.5 blocks at Hokes Bluff High School in Alabama last season. He joins a class that includes forwards Vince Edwards and Jacquil Taylor and guard Dakota Mathias.
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