He didn't, but even if he did - you can have to sit out due to testing positive for COVID or contact tracing. So if a player was in close contact with someone who tested positive prior to a game, they might have to sit out that game even though they are not positive. They could later get it (or come in close contact with someone who has it again) and have to sit out that game.
I don't know the rules in regards to contact tracing once it has been been confirmed that you have had it, but a player could theoretically have to sit out every game w/o ever getting it if they met the criteria for having to sit out due to contact tracing. This scenario is obviously incredibly unlikely, but missing several games w/o ever testing positive for COVID is definitely possible.