In only his fourth game for the Cannons this season, Foster impressed with his leading and finishing skills inside 50, playing an important role in his side's semi-final win over the Western Jets on Sunday.
The 194cm and 87kg forward is the son of former Bulldogs tall forward Peter, who played 163 games for the club between 1983-93, and won the best and fairest in 1990. Peter also played seven games for Fitzroy between 1980-82.
In 1988, Foster polled 14 votes in the Brownlow Medal to finish equal fifth in the count.
His son, who is eligible for this year's NAB AFL Draft, has barely been sighted this season after dealing with a foot injury.
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Calder region manager Ian Kyte said the injury forced Foster out of action for almost 10 weeks, having kicked three goals and taken seven marks against the Queensland Scorpions in May.
It was his fourth TAC Cup game of the year.
"He did a heap of rehab trying to get the injury right, and trained with us over the last three weeks. He was close last week but our conditioning guys just wanted to let him try to get through another week of training," Kyte said.
"His hands were very good and he's a reliable shot for goal. He's been a slower developer and has grown in the last couple of years, and that little bit of extra height certainly assists him."
The Bulldogs have kept tabs on Foster's progress throughout the year.
Under the father-son rule, if the 18-year-old nominates for the draft but is not selected, the Bulldogs can pre-select him for the rookie draft.
Foster is seen as an outside chance to be drafted given his limited appearances this season, but he is also eligible as a father-son pick next year.
The Bulldogs have benefited from the rule in recent seasons, last year picking Lachie Hunter (son of Mark), and drafting Tom Liberatore (son of Tony) and Mitch Wallis (son of Steve) in 2010.
Ayce Cordy, son of former Bulldog Brian Cordy, was drafted in 2008.
Twitter: @AFL_CalTwomey
