COSTA MESA >> The Chargers released their first unofficial depth chart in advance of their first exhibition game Saturday against the Rams, and rookie Zander Horvath is penciled in as their No. 1 fullback. It’s a job he could share with veteran Gabe Nabers when the regular season begins.

Horvath, a seventh-round draft pick from Purdue, might also land an enhanced role as a special teams player in 2022. It’s a job that could lead to greater things down the road for a 6-foot-3, 230-pound player who has shown a willingness to play a physical game during camp.

After all, he need only look at No. 1 running back Austin Ekeler to see how standout special teams play can be an entry eventually to a bigger role in the backfield. Ekeler embraced a special teams job as a rookie and will tell anyone