What to look for from the top 49ers and Cardinals players and how to watch the game as they face off on Sunday, week 5.

What to look for from the top Seahawks and Giants players and how to watch the game as they face off on Sunday, week 5.

Amid what constitutes scalding conditions for Northern California, 49ers coach Kyle Shanahan told reporters Friday that the team asked the NFL to switch to white uniforms from red uniforms and was refused. The team will be able to wear white pants with its throwback uniforms, but that's it.

With record heat descending on the Bay Area on Sunday, the NFL has denied the San Francisco 49ers' request to wear white uniforms for their home match against the Arizona Cardinals. The decision will leave the 49ers in their red home uniforms for the game in Santa Clara, where temperatures are expected to hit 100 degrees.