The guard's 11 second-half points — including two clutch free throws — sealed Maryland's win.
Cowan put up 31 points, six rebounds and six assists against Iowa on Thursday.
"I don’t think he gets enough credit for how good he is defensively."
Hawkeyes center Luka Garza — the Big Ten's leading scorer — picked up two early fouls, limiting his impact.
The Terps came back in the second halves against Northwestern and Indiana.
The Terps moved up two spots, and Smith notched two double-doubles in the two wins.
Behind Jalen Smith's 21 second-half points, the Terps outscored the Wildcats 51-26 in the final 20 minutes.
Harrison suffered a season-ending knee injury against Penn State on Sept. 27.
“Turgeon just tells me to just go in and fight my hardest, and that’s what I do every night.”
The Terps raced to an early lead, but the Boilermakers fought back in the second half.