Joiner is one of two quarterbacks Arizona signed on National Signing Day. The other is 3-star quarterback Kevin Doyle, the Washington D.C. Gatorade Player of the Year.
Here is more info on Joiner.
Height/Weight: 6-foot-3, 205 pounds
High School: Cienega High School
Hometown: Tucson, Arizona
247Sports Rankings: National - 585th; Position - 18th (among dual-threat QBs)
2017 Stats: 124-for-216, 2196 yds, 26 TD, 7 INT; 165 car, 1399 yds, 18 TD
Career Stats: 203-for-357, 3909 yds, 43 TD, 13 INT; 264 car, 2161 yds, 31 TD
Other Offers: Nebraska, UCF, Arizona State
My Thoughts: Joiner has progressed leaps and bounds in his passing ability from 2016 to 2017. He still isn’t perfect but it is a visible difference between the two years. He can throw either in the pocket or on the run. His arm strength and accuracy have increased as well. He has a higher ceiling than some think and should only get better under Noel Mazzone. He is also a very solid runner and can prove to be an issue to opposing defenses.