Here's the story on his commitment.
We saw Rasshan at UCLA's four-day camp last June. He looked big, about 6-3 (even though he states he's now 6-4), and about 185 pounds (he now states he's 210). He was definitely a prospect with potential, looking athletic and moving well. He generally had a good throwing motion, while it was still a bit inconsistent. On some throws he'd display a nice, polished motion, while on others the motion would change. His throws would sometimes flutter as a result. He did show good arm strength, and fairly good accuracy. It was just the spring before his junior year and he definitely was a prospect due to his size and arm strength alone. He does have one more full year to develop before he comes to UCLA.
Here are some pics of Rasshan at the camp: