The team was pulled off the field by head coach Jim Harbaugh on Wednesday after players struggled with footing during practice. Wide receiver Stevie Johnson slipped on the field during a 7-on-7 drill, prompting Harbaugh to end practice after less than an hour, CSN Bay Area reports.
The turf was installed in April, and the stadium has hosted one NFL preseason game, a soccer match and a concert since it opened.
The team apologized for the condition of the turf.
"The 49ers organization would like to apologize to any fans who were inconvenienced by today’s practice ending early. We have determined the appropriate measures necessary to have the field ready for Sunday and look forward to hosting the San Diego Chargers," the team said in a statement.
- Scooby Axson