Geremy Davis rides a bike and dishes out high fives to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.

LaDainian Tomlinson speaks to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.

Charger Girl dishes out high fives to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.

The wide receiver core poses for a picture during practice on Wednesday, Dec. 6, 2017.

Tyrell Williams watches in the football for a catch during practice on Wednesday, Dec. 6, 2017.

Travis Benjamin works on his ball security in a drill during practice on Wednesday, Dec. 6, 2017.

Keenan Allen watches the football in for a catch at practice on Wednesday, Dec. 6, 2017.

Sean McGrath rides a bike and dishes out high fives to students of Catskill Elementary School on Tuesday, Dec. 5, 2017.

Jeff Richards enters the auditorium with a bike on Tuesday, Dec. 5, 2017.

Jeff Richards dishes out high fives to students of Catskill Elementary School on Tuesday, Dec. 5, 2017.

Students of Catskill Elementary School raise their hands on Tuesday, Dec. 5, 2017.

LaDainian Tomlinson dishes out high fives to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.

LaDainian Tomlinson dishes out high fives to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.

Students of Catskill Elementary School raise their hands on before the event on Tuesday, Dec. 5, 2017.

Joey Bosa poses with students of Catskill Elementary School on Tuesday, Dec. 5, 2017.

Students of Catskill Elementary School cheer on Tuesday, Dec. 5, 2017.

Branden Oliver sprints with a football during practice on Wednesday, Dec. 6, 2017.

Austin Ekeler runs with a football during practice on Wednesday, Dec. 6, 2017.

Andre Patterson makes a catch in a drill during practice on Wednesday, Dec. 6, 2017.

Mike Williams makes a catch during practice on Wednesday, Dec. 6, 2017.

Rayshawn Jenkins leaps into the air to make a catch during a drill in practice on Wednesday, Dec. 6, 2017.

Hayes Pullard knocks down a dummy during practice on Wednesday, Dec. 6, 2017.

Trevor Williams sidesteps some bags during a drill in practice on Wednesday, Dec. 6, 2017.

Hunter Henry reaches out to make a catch during practice on Wednesday, Dec. 6, 2017.

Craig Mager reaches out for a tipped ball in practice on Wednesday, Dec. 6, 2017.

Tre Boston opens his arms to the camera before practice on Wednesday, Dec. 6, 2017.

The Chargers break down practice on Wednesday, Dec. 6, 2017.

Drew Kaser punts a football during practice on Wednesday, Dec. 6, 2017.

Melvin Ingram tosses a football on his way out to the practice field on Wednesday, Dec. 6, 2017.

Melvin Gordon throws up two fingers as he walks onto the practice field on Wednesday, Dec. 6, 2017.

Philip Rivers walks onto the field for practice on Wednesday, Dec. 6, 2017.

Tre Boston stretches before practice on Wednesday, Dec. 6, 2017.

Melvin Gordon makes a catch during a drill in practice on Wednesday, Dec. 6, 2017.

Craig Mager lunges during stretches before practice on Wednesday, Dec. 6, 2017.

Jeff Cumberland hauls in a football for a catch during practice on Wednesday, Dec. 6, 2017.

Sean Culkin runs a route in practice on Wednesday, Dec. 6, 2017.

Philip Rivers throws the football in practice on Wednesday, Dec. 6, 2017.

Tyrell Williams hauls in a reception during practice on Wednesday, Dec. 6, 2017.

Andre Williams takes a handoff in practice on Wednesday, Dec. 6, 2017.

Isaac Rochell throws up the horns as he jogs onto the practice field on Wednesday, Dec. 6, 2017.

Joey Bosa pushes along a bike and dishes out high fives to students of Catskill Elementary School on Tuesday, Dec. 5, 2017.

Charger Girl dishes out high fives to students at Catskill Elementary School on Tuesday, Dec. 5, 2017.