If you had the unfortunate honor of following me on Twitter during the 2016 season, you were subjected to several dozen versions of this tweet:

Request: If your team’s catcher throws behind a runner at 1B this year, tweet me date/team/inning/batter. Please RT for science!

— Neil Weinberg (@NeilWeinberg44) April 3, 2016

I undertook a yearlong effort to catalog and analyze every instance in which a catcher threw behind a runner at first base and the product of that endeavor was an essay in the 2017 Hardball Times Annual. That essay contains answers to questions including, but certainly not limited to:

• Which catcher threw to first most often? (Salvador Perez.)
• The average success rate on back-pick attempts? (About 10%.)
• Which catcher was most accurate when throwing to first? (Yadier Molina.)
• Do base-stealers draw more throws? (They seem to.)

If said essay failed to quench your thirst for back-pick factoids, you will likely have interest in getting your hands on the raw data which you can download here. If you use the data for any sort of published work, all I ask is that you cite me and send me a link on Twitter (@NeilWeinberg44).