Question: Which tennis player, Kevin Ullyett or Jonathan Marray, competed on the singles tour, reaching world no. 215 in April 2005, but was unable to continue his singles career, in part due to injuries?
Sentence (from "Jonathan Marray"): He has also competed on the singles tour, reaching world no. 215 in April 2005, but was unable to continue his singles career, in part due to injuries.
Relevant evidence: Yes