sized up Courtesy of NBA
Conor McGregor was ready to pick on someone much larger than his own size at the Bucks vs. Jazz game on Monday ... looking big man Brook Lopez up and down right in the middle of the action!!
The hilarious interaction went down in the second quarter of Milwaukee's 125-110 road win over Utah ... when Notorious was walking along the sideline to get to his courtside seat, but was interrupted by something the 7'1" center said.
The UFC superstar quickly turned around and approached Lopez during Damian Lillard's free throw attempts .