A record is a record is a record

Alamazoo Jennings, professional baseball player. Born Alfred Gordon Jennings, Nov. 30, 1850, in Newport, Ky. Played one (1) game for the Milwaukee Grays on Sept. 15, 1878. Two at-bats, no hits, one walk. As catcher in the game, Jennings had seven total chances, two putouts, one assist, four errors, 10 passed balls. Fielding average .429. Jennings died Nov. 11, 1894, in Cincinnati. He is buried in Southgate, Ky.

Whoever was pitching for the Grays that day must have been at least a little frustrated with a catcher who made four errors and had 10 passed balls. Wikipedia says: “The 10 passed balls was the record until Alex Gardner had 12 in 1884. Milwaukee lost the game to Cincinnati 13-2.” Gardner still has the record. For after-1900, the record is six, held by Harry Vickers (Cincinnati, 1902), Gino Petralli (Texas, 1987), and Jerry Goff (Houston, 1996).

How Jennings became Catcher for a Day:

"[Bill] Holbert was so badly hurt in Tuesday's game that he was sent home yesterday. [Charley] Bennett has a thumb as big as a young pup, and [Will] Foley's hands gave out in Wednesday's game. Manager Chapman's supply of catchers having thus run out, he telegraphed for one of the three he left behind him, namely, [Jacob] Knowdell. But Knowdell was fishing when the telegram reached Milwaukee, and he didn't get it until too late to reach Cincinnati in time for yesterday's game.

“No matter, however, for Al Jennings threw himself into the breach. Al has umpired an occasional game, and several times played with the boys down in Mill-creek. But he looked so large and handsome and so very like a catcher that Manager [Jack] Chapman was mashed, and straightway engaged him, and clinched the bargain with a dinner. When Al pulled on his sole-leather gloves and posed near the grand stand at three o'clock, the crowd scarcely breathed. Zip came the ball from [Mike] Golden's hand; bang it went against the back-stop, because Al had stooped too late to pick it up. It took several minutes for him to gauge the speed of Golden's pitching, but he got it down fine at last, and stopped a ball, every once in a while. But the low comedy parts came in when the new catcher went up close behind the bat. A batter had but to get on first base and the run was scored. They went to second and third without danger, and tallied on a passed ball. Be it said to his credit, though, that Jennings never flinched, but stood up against Golden's hot pitching with great nerve and stood the punishment bravely. He was strong enough last night to whisper that if Knowdell doesn't get here by to-morrow he is willing to catch for [Sam] Weaver, but Weaver says he'll paralyze him if he attempts it."

Milwaukee Sentinel, Aug. 19, 1878.
http://www.baseball-reference.com/bullpen/Alamazoo%20Jennings

Jennings’ stats from
www.baseball-almanac.com
others from http://bb_catchers.tripod.com/catchers/passedballs2.htm