The phrase "injury luck" refers to the chance of getting hurt or injured. It describes whether someone has been fortunate or unfortunate in avoiding injuries. Full definition
But bad injury luck still Sign another player to back up. (justarsenal.com)
And it's a contact sport so injury luck is involved. (sbnation.com)
As reported by The Mirror, the bad run of injury luck continues as the manager confirmed that it would be at least two months in the treatment room for a player that has become a vital part of the Arsenal team. (justarsenal.com)