A young footballer's death after an on-field tragedy has sparked a broader conversation about the risks of being tackled on cricket pitches at suburban grounds.Nathan Fitzgerald, 27, suffered critical head injuries during an Australian rules football game at Lalor Recreation Reserve, in Melbourne's north.He died in hospital on Monday night.Fitzgerald, who was playing for Epping Football Netball Club, clashed heads with a teammate after attempting to tackle an opponent on Saturday.The clash was the first of several blows "No one really wants that to happen to someone when they're playing footy."Fitzgerald was remembered as kind, upbeat and softly spoken."But he was tenacious and courageous as anything on the field," De Vincentis said.Fitzgerald worked at Mernda Central College, where he taught maths and science.Support would be made available for the school community, a Department of Education spokesperson said."Our thoughts are with the family, friends and colleagues of Nathan Fitzgerald at this very difficult time."For the latest from SBS News, download our app and subscribe to our newsletter.