These 49ers players missed bonus Monday practice

After three days off, the San Francisco 49ers returned to the practice field on Monday. However, the team is still missing several key players as it prepares for Sunday's regular-season opener against the Pittsburgh Steelers.

According to several reports, including Eric Branch of the San Francisco Chronicle, the following players did not suit up for Monday's bonus session.

• DE Robert Beal (hamstring)
• LB Oren Burks (knee)
• S Tashaun Gipson (undisclosed)
• WR Danny Gray (shoulder)
• TE George Kittle (groin strain)
• RB Jordan Mason (foot sprain)
• WR Ray-Ray McCloud (broken wrist)

All except Beal and Gray were seen getting some work on a side field. Those two players are on the team's injured reserve list. Obviously, defensive end Nick Bosa was no in attendance. He continues his holdout for a new contract.

The following players returned to practice.

• LB Dre Greenlaw (hamstring)
• S Talanoa Hufanga (knee)

Below are some jersey number updates, per Matt Barrows of The Athletic.

• QB Brandon Allen is now No. 17 (was 4)
• DE Robert Beal is now No. 51 (was 55)

49ers players will have Tuesday off. On Wednesday, the team will begin its first normal game-week practice schedule of the regular season, with three consecutive days of practices. San Francisco will issue official injury reports for each of those practices.