Kyrie Irving will get 2nd opinion on sore knee

Brad Stevens’ phrase for what ails Kyrie Irving is “continued soreness” in his left knee.

In this case, though, continued soreness has led to the second player in a week who needs a second doctor’s opinion on his injury.

Brad Stevens confirmed Tuesday night that Irving will get a second opinion on what’s wrong with his left knee, which went under the knife for a fractured kneecap just prior to the 2015 NBA Finals.

Irving, as a result, will not travel with the team when it flies out Wednesday for a four-city western road trip that includes stops in Portland, Sacramento, Phoenix and Salt Lake City.

But asked if the team has discussed surgery options with the guard, who was previously thought to…