|Date of birth||29 January 1987|
|Original team(s)||Sandringham Dragons / Sandringham Zebras|
|Debut||Round 8, 2008, Melbourne
vs. Adelaide, at AAMI Stadium
|Height / weight||176 cm / 80 kg|
1 Playing statistics correct to the end of 2009.
|Sources: AFL Tables, AustralianFootball.com|
Valenti was selected with the 51st selection in the 2007 NAB AFL Rookie Draft, which was Melbourne's final draft selection for that season. He made his mark in the Victorian Football League, playing with Melbourne's VFL-affiliate Sandringham, as a tough, in-and-under midfielder, and won the Fothergill-Round Medal as the league's most outstanding young player.
Valenti made his senior debut for Melbourne in Round 8 against Adelaide in the 2008 season, he played a total of nine games for the year. The 2009 season saw Valenti only manage six senior games for Melbourne, spending majority of the season as a consistent performer in the VFL, with Melbourne's new affiliate team Casey. He finished fifth in Casey's best and fairest. At the end of the 2009 season, Valenti was delisted by Melbourne.
In 2010, Valenti moved to Port Melbourne in the VFL, where he played for the next five seasons. He was joint winner of the J. J. Liston Trophy in 2010, tying on 20 votes with North Ballarat's Steve Clifton. The following year, he won the Liston Trophy again, this time outright, becoming the third player in VFA/VFL history to win the award back-to-back. With his win, there was speculation that he may be recruited by AFL teams Greater Western Sydney or Essendon, but neither eventuated and he remained with Port Melbourne. He departed Port Melbourne at the end of 2014, having played a total of 149 VFL games for Sandringham, Casey and Port Melbourne, and returned to playing suburban football.
- Burgan, Matt. "Valenti and Buckley delisted". Melbourne FC. Retrieved 14 September 2010.
- Mark Towson Shane Valenti takes out Liston Trophy, Retrieved 12 September 2010.
- Diamond, Brett (13 September 2011). "Valenti seizes second Liston". The Sydney Morning Herald. Retrieved 13 September 2011.
- Diamond, Brett (10 December 2011). "Dons set to draft Liston winner". The Age.
- "Two-time JJ Liston Trophy champion Shane Valenti leaves Port Melbourne to play at Noble Park". Leader. 29 October 2014. Retrieved 4 March 2015.