If it’s a freshman and you’ve made promises, they’ll expect to play as soon as they’re healthy enough, which is 60%. Otherwise, I generally take their rating adjusted by their health level, and if they’re better than their backup, I’ll put them back in. You don’t have to worry about re-injury, despite what the email says, but when they’re down at 60-70% and I don’t need to start them for promises, I’m usually in a situation where it’s best for the team if they’re at 2nd-3rd string.