The phrase "a proven player" is correct and usable in written English.
It can be used to describe someone who has demonstrated their skills or effectiveness in a particular field or activity, often in a professional or competitive context.
Example: "The team is looking to recruit a proven player who can contribute to their success on the field."
Alternatives: "an established performer" or "a reliable contributor."
Fassel worked alongside Junkin when both were with the Arizona Cardinals and liked the idea of having a proven player on the field in the playoff game.
The situation leaves the MetroStars without a proven player in goal as the playoffs approach, beginning on Sept. 15 at Giants Stadium.
Yet, with Lucas's involvement often limited under the Liverpool manager, it was strange the club did not sign a proven player for that role during their £117m summer spending spree.
While the Knicks have lost games in almost every conceivable way, Eisley, a proven player in the N.B.A., has had to sit and watch, cheer and wait, fume but zip his lip.
"I mean, big-market teams — they either have the money to go out and get a proven player, or sometimes they hesitate on a decision because of what the fans are going to say about it.
"We have decided to strengthen our batting order with Brendan, a proven player who will be an excellent addition to the side".
As a proven Test player and the senior spin bowler, Ring was chosen for his second tour of England in 1953, this time under the captaincy of Hassett.
The stadium generates £2 million of revenue every time Arsenal plays at home, but to keep on filling that house Arsenal must buy new — and this time, proven — players: a leader in defense and a reliable strike partner to Robin van Persie.
Speculation was that in return for Nash the Blue Jackets would ask for a "combination of young, proven players, high-end prospects and draft picks".
After recruiting well in the off season, bringing in a number of experienced and proven players, manager Kenny Lowe hasn't reinvented the wheel with his side.
Young, a winger, is a proven, fabulous player with great delivery who will add much.
