Frazier, 29, who leads baseball in hits this year, is not a free agent until after the 2022 season.
Frazier entered Sunday hitting .327 — the second-best average in Major League Baseball — with four home runs and 32 RBI.
Frazier, a 2020 Gold Glove finalist and All-Star this season, was the Pirates’ second-longest tenured player behind right fielder Gregory Polanco.
When asked about possibly being traded a week ago, Frazier said he wasn’t letting it distract him.
“It’s pretty cool to be recognized like that and have teams want you,” Frazier said. “It means a lot. It tells you you’re playing well, but I still have to worry about playing baseball.”