Charles Krupa/AP

Eric Kettani took his turn hitting a blocking sled during one of the Patriots minicamp workouts this week.

Charles Krupa/AP

Tom Brady has been at the center of the practices as he heads into his 13th season with the Patriots.

Jonathan Wiggs/Globe Staff

Julian Edelman went low for this catch in the minicamp, which is the one mandatory offseason session for players.

Charles Krupa/AP

Patriots coach Bill Belichick, right, welcomed ex-Cardinals manager Tony LaRussa, center, and Bulls coach Tom Thibodeau to practice.

Robert E. Klein for The Boston Globe

Defensive back Devin McCourty, left, needed a water break.

Jonathan Wiggs/Globe Staff

New Patriots receiver Brandon Lloyd went to his knees for this catch.

Robert E. Klein for The Boston Globe

Defensive back Ras-I Dowling, who spent much of last year on injured reserve, participated in the drills.

Jonathan Wiggs/Globe Staff

Tom Brady tried to get acquainted with a bevy of new receivers during the workouts.

Robert E. Klein for The Boston Globe

Rookie defensive back Alfonzo Dennard, left, ran with veteran Devin McCourty.

Charles Krupa/AP

Defensive lineman Jamie Richard, left, slammed a blocking pad into offensive lineman Dan Koppen.

Robert E. Klein for The Boston Globe

Tom Brady, as usual, drew a large contingent of reporters when he answered questions.

Jonathan Wiggs/Globe Staff

Bill Belichick oversaw a minicamp that will precede his 13th season as Patriots coach.