Thomas finished first in the poll last season and second in 2009-10.
The voting was done by the OHL coaches.
Thomas had 34 goals and 33 assists for Oshawa this season after scoring 54 goals and totaling 99 points last season.
Oshawa takes on Niagara in the first round of the OHL playoffs starting on Thursday.
Nick Perri spoke with Thomas about his play earlier this season.
It was a tough season for Thomas with a slow start, a ten game suspension and then getting cut from Team Canada at the World Junior Camp. Still, he has loads of talent and skill and has a big chance to make an impact in Hartford next year in his first pro season.
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