Mohr, who hails from Tasmania, played seven VFL games for the now defunct Tassie Devils, before joining the Scorpions in 2008.
Mohr held off Bate by 16 votes in a close finish with full forward Brendan Fevola coming in third on 61 votes.
The 195cm, 98kg key position player shrugged off injuries from previous seasons to produce a consistent year, playing mainly in defence although he was occasionally called on to pinch hit in the ruck.
Mohr combined his size, good strength, speed, while he was noted for his long kicking.
The fast-finishing Bate was unlucky to miss out on the award.
Fevola also had a strong second half year to finish third. He was the club's top goalkicker with 68 and was a narrow runner-up for the Frosty Miller Medal for the VFL's top goalkicker.
Co-captain and a multiple best and fairest winner James Wall finished fifth ahead of future Demon ruck star Max Gawn.
Mohr also picked up the Leader Media Award and the $1,000.00 cheque that goes with it.
Wall and courageous co-skipper Kyle Matthews presented the 2011 Captains Award to youngster Luke Tynan, who also received the Reserves Best and Fairest award from Scorpion legend ‘Snowy’ Fenton in whose honour the award is named.
Senior coach Brad Gotch was recognised for his achievement on coaching his 250th VFL match this season.
Other seniors awards went to:
Team Acts award - James Wall (who won this award last year)
Players MVP - Matthew Bate
Coaches Award - Matthew Warnock
Most Improved Award - Will Petropoulos
Steve Harrison Rising Star Award - Mitch Gent
Top votegetters (Gardner-Clark Medal)
1. Tim Mohr 97
2. Matthew Bate 81
3. Brendan Fevola 69
4. Matthew Warnock 63
5. James Wall 55
6. Max Gawn 49
7. Michael Stockdale 43
8. Tom McNamara 38
9. Addam Maric 34
Reserves Award winners were:
Best & Fairest - Luke Tynan
Runner up best and fairest - David Bell
Team acts award - Jordan Pollard
Reserves MVP Award - Stefan Baumgartner
Reserves Coaches award - Gus Patti
Most improved award - Jess Bolton
Aaron Purves was the reserves competition's top goalkicker