It wasn't the dream start that San Francisco 49ers fans hoped for in the team's preseason opener. Both the offense and defense struggled in a few series marred by injury.

Let's start with Jimmy Garoppolo and the first-team offense. That group played one series, and the drive ended in a punt. Garoppolo finished 3-of-6 passing for 34 yards. He did complete two third-down passes to move the chains. The first went to Richie James for a 9-yard completion. On the ensuing third down, Garoppolo hit Marquise Goodwin for a gain of 18 yards.

The first-team defense's lone series was highlighted by a split sack between DeForest Buckner and Solomon Thomas. Other than that, the Cowboys marched down the field. Dak Prescott completed all three of his pass attempts for 39 yards, including a 30-yard touchdown to Michael Gallup. Prescott also scrambled for 12 yards to convert on a third-and-long. Ezekiel Elliott did not play, which gave Rod Smith the start. He ran the ball eight times for 32 yards.

Some defensive starters remained for a second drive including, Jimmie Ward, Ahkello Witherspoon, D.J. Reed, Reuben Foster, Jullian Taylor and Solomon Thomas.

Here's where things went from bad to worse for San Francisco. George Kittle (shoulder), Malcolm Smith (hamstring), Solomon Thomas (head) and Matt Breida (shoulder) all left the game for the 49ers. Here's to hoping none of those injuries are serious.