#3 Capturing the Tag Team Championship
Brock Lesnar has rarely competed in tag team matches in WWE. His last televised tag match in the company was in 2004 when he teamed up with Big Show to take on Eddie Guerrero and John Cena on the February 12th episode of SmackDown.
Before joining the main roster, however, Brock Lesnar formed a tag team with his friend Shelton Benjamin in Ohio Valley Wrestling under the name The Minnesota Stretching Crew. They won the OVW Southern Tag Team Championship on three separate occasions.
That was in OVW, then WWE's developmental territory. Since then, The Beast has never held tag team gold in WWE, and it doesn't look like he'll be Tag Team Champion anytime soon.
It would've been good to see Lesnar reunite with Benjamin to challenge for the Raw or SmackDown Tag Team Titles. They could've been a legitimate tag team. They even had a very short lived reunion at the Royal Rumble - before Lesnar punked him and tossed him out. Lesnar's career is nearing its end, so it's most likely that The Beast will retire without holding tag team gold.