DENVER — Corey Seager will not be in the starting lineup when the Dodgers play the Colorado Rockies tonight.

Dodgers manager Don Mattingly said that Seager, who has reached base in each of his first 16 major league starts, is feeling “heavy legged.” That’s a clever baseball euphemism for fatigue, the kind that comes with playing 144 games across the Double-A, Triple-A and major league levels this year. Only Adrian Gonzalez has played more games this season than Seager among those currently on the Dodgers’ active roster.

Chase Utley is getting his second career start at third base and Jimmy Rollins is starting at shortstop. Here’s what Mattingly said about Seager during his pregame media briefing: