WEST PALM BEACH, Fla. — Hall of Famer Craig Biggio hopes increased labor tension doesn’t lead to Major League Baseball’s first work stoppage in a quarter century.

“Hopefully ownership knows and players know that nothing good’s going to come of it,” Biggio said Tuesday at Houston Astros training camp, where he will serve as a guest instructor for the next week.

Baseball’s labor contract runs through 2021. Players have increasingly complained about the second straight slow free-agent market, and their union has proposed major economic changes mid-agreement. Stars Bryce Harper, Craig Kimbrel and Dallas Keuchel remain unsigned.

During his 20-year career with the Astros, Biggio was part of the 32-day lockout during spring training in 1990 that led to the season starting a week late and the 7½-month strike in 1994-95 that caused the first cancellation of the World Series in nine decades.

“Hopefully calmer heads prevail when they get into these conversations and negotiations,” Biggio said.