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Chaz Williams has been deciding factor for UMass basketball

Chaz Williams averaged 15.5 points and 7.3 assists as a junior at UMass, but opted to return for his senior season and his numbers have improved (16.9 and 7.6). Some other high-profile players who chose to return to college for a fourth season and how they have fared through Wednesday's games:

* Preseason AP All-American team

Doug McDermott

F, Creighton

Eric Francis/Getty Images

Junior season

23.2 ppg, 7.7 rpg, .548 fg pct

Senior season

25.3 ppg, 7.1 rpg, .500 fg pct

Marshall Henderson

G, Mississippi

Maddie Meyer/Getty Images

Junior season

20.1 ppg, .350 3-pt pct, .381 fg pct

Senior season

18.8 ppg, .388 3-pt pct, .356 fg pct

Kendall Williams

G, New Mexico

Jeff Bottari/Getty Images

Junior season

13.3 ppg, 4.9 apg, .406 fg pct

Senior season

19.4 ppg, 5.1 apg, .511 fg pct

Shabazz Napier

G, Connecticut

Jared Wickerham/Getty Images

Junior season

17.1 ppg, 4.6 apg, .441 fg pct

Senior season

15.0 ppg, 6.1 apg, .476 fg pct

Russ Smith

G, Louisville

Andy Lyons/Getty Images

Junior season

18.7 ppg, 2.9 apg, .414 fg pct

Senior season

16.6 ppg, 5.2 apg, .449 fg pct

C.J. Fair

F, Syracuse

Nate Shron/Getty Images

Junior season

14.5 ppg, 7.0 rpg, .470 fg pct

Senior season

18.1 ppg, 5.3 rpg, .470 fg pct

Tim Frazier

G, Penn State

Maddie Meyer/Getty Images

Junior season

16.3 ppg, 3.8 apg, .357 fg pct

Senior season

18.4 ppg, 7.6 apg, .477 fg pct

Adreian Payne

C, Michigan State

Duane Burleson/Getty Images

Junior season

10.5 ppg, 7.6 rpg, .546 fg pct

Senior season

16.6 ppg, 7.9 rpg, .504 fg pct

HONORABLE MENTION: Markel Brown, G, Oklahoma State; Aaron Craft, G, Ohio State; Cleanthony Early, F, Wichita State; Cory Jefferson, F, Baylor; Patric Young, F/C, Florida.

Luke Knox/Globe staff

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