Sports

Carlos Hyde has rushed for just 26 yards on 10 carries in the first two exhibition games as San Francisco struggles to get into an offensive rhythm under new coach Kyle Shanahan's offense that is based heavily on outside zone runs.

Floyd Mayweather presents an entirely different challenge when McGregor steps in the Vegas ring Saturday night. In his professional boxing debut, McGregor must figure out how to beat Mayweather at his own game — something the best boxers in the world have never done.

Should he somehow manage to knock out Floyd Mayweather Jr. in the early rounds Saturday night, the city's bookmakers would lose millions of dollars in the biggest single event loss in the history of sports betting.

Supporters of former San Francisco 49ers quarterback Colin Kaepernick, who refused to stand for the national anthem to protest police brutality against blacks, showed their solidarity with him and his cause at a rally outside National Football League headquarters on Wednesday, demanding that he be signed by the start of the regular season next month.

Penn reported for practice on Wednesday after holding out for 26 days. Penn was looking for an improved contract but general manager Reggie McKenzie said earlier in training camp that he would not negotiate a new deal with Penn until he arrived at camp.

Britton's AL-record run of converting 60 straight save attempts was ruined when he blew a two-run lead and failed to get out of the ninth inning in a game Baltimore ultimately won in the 12th, 8-7 over the Oakland Athletics.

Jarrett Parker hit a go-ahead two-run double on a checked swing in the seventh, Buster Posey hit a sacrifice fly, and San Francisco beat the contending Brewers 4-2 on Wednesday.