Bruce Brubaker - Why does he have a card?

Here we have card #276 - Bruce Brubaker. Although the card back says the Dodgers acquired Bruce from the Tigers' organization, he spent the 1966 season (on loan?) with the Phillies' triple-A team in San Diego, so I suspect that's a Phillies uniform he's wearing (with red windbreaker under his jersey, of course!)

The most interesting part (ok, the only interesting part) about this card are his stats on the back. To date, Bruce had not racked up any appearances for a major league team, yet he somehow managed to get a full baseball card all to himself.



Why does he have a card?