Solomon beat out sophomore Zach Smith, a former three-star recruit.
Solomon, a redshirt senior, transferred to Baylor in January after three seasons at Arizona.
The Las Vegas native had an up-and-down career with the Wildcats, some of it stemming from injuries and a weak supporting cast.
As a redshirt freshman in 2014, Solomon threw for 3,793 yards and 28 touchdowns to just nine interceptions, as he led Arizona to a Pac-12 South title and the Fiesta Bowl.
The next season, Solomon threw for 2,655 yards and 20 touchdowns to just five interceptions. However, he missed two games due to injury, including the Territorial Cup game, which foreshadowed things to come in his junior season.
Solomon appeared in just five games for Arizona in 2016 after he suffered an early-season knee injury in practice.
He tallied just 462 yards through the air and one touchdown pass, along with two interceptions.
Even when on the field, Solomon was outplayed by Brandon Dawkins, whose ability to create plays on the ground added another dimension to a stagnant Arizona offense.
And with Dawkins returning in 2017, Solomon chose to use his final eligibility elsewhere and landed at Baylor. Because Solomon was a graduate transfer, he does not have to sit out a year.
Solomon’s debut with Baylor is Saturday, Sept. 2 at 4 p.m. MST on Fox Sports 2.
Baylor, a rebuilding program (to say the least), was picked to finish seventh in the Big 12 this season.
Follow Ryan Kelapire on Twitter at @RKelapire