The phrase "a positive player" is correct and usable in written English.
It can be used to describe someone who contributes positively to a team or group dynamic, often in a sports or collaborative context.
Example: "Her attitude and enthusiasm make her a positive player on our team, always encouraging others to do their best."
Alternatives: "an optimistic contributor" or "a supportive team member".
"I am a positive player, not a negative player," Nadal said.
The youngster is such a positive player that it came as a genuine surprise to see his shoulders drop and his arms open in a gesture of annoyance with himself, while he glanced across at his family who were all present.
"I'm a positive player; I've got pace and I like to think I can take on my man and deliver," said Anya. "That's what I'm trying to work on at Watford - the delivery and end-product.
"To put West Ham in a good position you need to keep the good players, a good positive player can help you do that.
The stories that now sit on the Today tab are a really exciting way to do this; as an example, when Alto's Odyssey released for pre-order, we saw a really positive player response to the discussion of the game's development.
I am a quick and positive player and I hope to show that out on the field and help all my team-mates.
Against Philadelphia the former Stanford forward was an altogether more positive player.
Jeffrey Poston, executive director of the Canadian Pharmacists Association, describes Apotex as a "very active and very positive player" in providing training and sponsorships for his pharmacy members.
On England's decision to open with Pietersen in their second innings, Smith added: "He's a good player but England have a lot of positive players.
The roommates screened were all those who lived with an MRSA-positive player and those who lived with an MRSA-negative player but had skin infections.
But, on a positive, the players stuck at it, they had a fantastic attitude and it was the least we deserved.
