Why J.P. Crawford is committed to helping the Mariners rookie likely to take his spot

Seattle Mariners shortstop J.P. Crawford, the franchise's longest-tenured player and record-holder for most games played at shortstop, has embraced mentoring rookie Colt Emerson, who is expected to take his starting position. On Monday night, Emerson hit a home run for his first major-league hit, and Crawford was the one leading the celebration by holding the ceremonial trident in the dugout. Crawford, a potential free agent, is actively helping Emerson acclimate to the major leagues despite knowing the rookie is his likely replacement.