SANTA CLARA – Time to see who can be a one-day wonder — or more — for the 49ers in a joint practice .

The 49ers will host the Denver Broncos on Thursday morning for a single practice that: (a) breaks up training camp monotony; and (b) serves as the true warmup for first-stringers who’ll be safely shelved from Saturday’s preseason opener at Levi’s Stadium.

Next week, the 49ers are expected to repeat that schedule, with an Aug. 14 joint practice at the Las Vegas Raiders’ facility before their preseason game Aug. 16 at Allegiant Stadium.

“I’m more excited just going against someone once (in practice),” coach Kyle Shanahan said. “In the past I’ve always done two days, and I’m always really excited by the end of the first day. I’m always wishing we didn’t have to go the second day.”

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