 Williams' improvement has impressed Rawlinson |
Rhys Williams set a personal best and broke the Welsh record in finishing fourth in 49.09s at the 400m hurdles. South African Louis Van Zyl won the race in a new Games record of 48.05s, Alwyn Myburgh and Kemel Thompson filling the remaining medal spots.
"I would have loved to get a medal but I am really pleased with that. I have loved being here," said Williams, 22.
The young Welshman also impressed Chris Rawlinson, who finished a disappointing last in his final race in the event.
"I have trained with Rhys for the last couple of years and he is a great athlete," said the 2002 champion.
"He has proved he is a championship performer and good luck to him."