Power rookie Mitchell's chance to fill gap in defence Port Adelaide's Jackson Trengove is expected to miss 10 weeks after having surgery on a broken foot. PORT Adelaide's backline has taken a serious hit after former best and fairest Jackson Trengove was added to the long-term injury list. Trengove is expected to miss at least 10 weeks after having surgery on a broken foot, which leaves the Power to find another key defender. They have also lost a lot of voice; Travis Boak values his skill in firing up players and considers him an integral part in setting the team's mood. The beneficiary of the injury is mature-age rookie Kane Mitchell, who had just returned to the rookie list - which meant he was not eligible for selection. But Mitchell and Trengove are not the same type of players. At 174cm, Mitchell is Port's second smallest player who makes up for it with lightning pace and a good tank. This means the Power will look at Jack Hombsch (193cm) and Tom Clurey (193cm) as possible replacements for the 197cm Trengove. Port yesterday lodged a surgeon's report with the AFL for him to gain permission to be on the long-term injury list. He had a screw inserted during surgery on Monday. Mitchell, a mature age recruit at 23, was the obvious choice for elevation to the senior list after impressing in the first three games of the season, when he was filling in for Nick Salter, another Power player who was missing with a foot injury. He will re-commence running in approximately six weeks and we expect his full rehabilitation program to take 10 weeks. Meanwhile, Matthew Richardson, Matthew Lloyd and Michael O'Loughlin are potential inductees for the Hall of Fame night on June 4, to be held outside Melbourne for the first time. The AFL will hold its celebration of past champions in Canberra's Great Hall of Parliament House to mark the 100th birthday of the capital. The move from Melbourne's Crown Casino to Canberra continues the shift of AFL events around Australia, with this year's national draft to again be on the Gold Coast. Players must have been out of the game for three years to be eligible for the Hall of Fame. Lloyd is seventh on the list of AFL goalkickers with 926 and Richardson 11th with 800. O'Loughlin is 49th with 521, and the premiership player was the first Swan to play more than 300 career games. Other potential inductees include Anthony Rocca, David Wirrpunda, Adam Simpson, Peter Burgoyne and Scott Lucas.