Trading for a veteran quarterback is a practice the 49ers have employed just 14 times since the 1950s. Here is a look at their deals preceding this week’s for Jimmy Garoppolo from the New England Patriots for a 2018 second-round draft pick:
— Blaine Gabbert: 2014, Jaguars (2014 6th-round draft pick).
— Colt McCoy: 2013, Browns (with 2013 6th-round pick for 5th- and 7th-round picks).
— Trent Dilfer: 2006, Browns (QB Ken Dorsey and 2007 7th-round pick).
— Cade McNown: 2002, Dolphins (2003 7th-round pick).
— Steve Young: 1987, Buccaneers (1987 2nd- and 4th-round picks plus cash).