First-round draft pick Eric Reid was held out of practice with an unspecified minor injury, according to coach Jim Harbaugh. ... Wide receiver Brandon Carswell, who was signed on Wednesday, suffered a torn ACL. ... Anquan Boldin, the 49ers' prized offseason acquisition, was on the field but did not take part in the full-team scrimmage portion of practice.

Top 5 locations of last drink before DUI arrest

1) Home – 254

2) Friend’s House – 223

3) Relative’s House – 82

4) Graton Casino – 72

5) Car – 56

Source: CHP Last Drink Surveys 2015-2017

DUI arrests in Sonoma County by agency

Every day, on average, more than seven people are arrested on suspicion of driving under the influence of alcohol or drugs in Sonoma County. Two-thirds are arrested by two agencies: CHP and Santa Rosa police, The Press Democrat found in an analysis of 8,074 DUI arrests by 14 law enforcement agencies from 2015 to 2017. Here’s how they break down by agency.

CHP: 3,155 arrests, excluding the City of Sonoma and a good chunk of the Sonoma Valley, which are served by the CHP office in Napa.

Santa Rosa police: 2,000

Petaluma police: 839

Rohnert Park Public Safety: 469

Sebastopol police: 426

Healdsburg police: 394

Cotati police: 185

Sonoma police: 155

Windsor police: 139

Sonoma County Sheriff’s Office: 100

Santa Rosa Junior College police: 87

Cloverdale police: 70

Sonoma State University police: 31

California State Parks rangers: 24