Tigers lose midfielder Reece Conca for a month Reece Conca gets a handball away. EMERGING Richmond midfielder Reece Conca will miss at least four weeks after being diagnosed with a stress reaction in his foot. Conca will wear a moonboot for 5-10 days after scans this week detected the injury in his right foot. The No.6 pick in the 2010 draft has averaged 20 disposals and four tackles a game this season. The good thing is we picked it up this early. It didn't develop into a crack or stress fracture," Richmond's elite performance manager Peter Burge told the club website. If there's a positive, it's that it is a little bit shorter-term than a stress fracture. After a trouble-free start to the season, the Tigers will be forced to make at least three changes at the selection table tomorrow. Steven Morris will miss Friday night's clash against Fremantle through suspension while defender Troy Chaplin has not recovered from concussion. Their absence is likely to open the door for Nick Vlastuin, Richmond's top pick at last year's draft, to make his AFL debut. Robin Nahas and former Kangaroo Aaron Edwards are also chances to play the Dockers.