Several months ago, I posted this, and wondered if there were any more cards printed where the sole position listed on the card was 'pinch hitter'. At the time, a cursory search didn't turn up any.
But, there is at least one more player who has been so honoured.
Plus, this isn't the only Wallace Johnson with that designation. He's also listed as 'PH' on his 1989 and 1990 Donruss cards.
So, when it comes to honouring the pinch hitter on cardboard, there can't be only one.