Since Jimmy Garoppolo's season-ending foot injury, the 49ers have been making more quarterback changes.

Unfortunately for the San Francisco 49ers, their Super Bowl hopes were significantly hampered on Sunday when quarterback Jimmy Garoppolo broke his left foot in a win over the Miami

Dolphins at Santa Clara, California.Backup quarterback Brock Purdy, this year's 262nd overall pick, replaced Garoppolo. After Garoppolo and second-year pro Trey Lance, he will take

over as the starting quarterback for the 49ers this season.The loss "was extremely depressing just hearing it," Coach Kyle Shanahan said in his postgame press conference. We are

aware of the struggles Jimmy has through and the efforts he has made in order to succeed. In the second quarter, I found out. So, even the general elation we felt upon winning

that game struck me as unusual. There were conflicting feelings after the victory because of what we heard about Jimmy.The 49ers extended their winning streak to five games with a

33-17 triumph over the Dolphins. They are in first place in the NFC West with a record of 8-4, putting them one game ahead of the Seattle Seahawks.A sack on the 49ers' first

The final guy selected in the draught, dubbed "Mr. Irrelevant," has suddenly become crucial to the 49ers' success. In Sunday's game, Purdy, who was picked 262nd overall in April

after attending Iowa State, completed 25 of 37 passes for 210 yards. There were two touchdown passes and one interception thrown by him.By acquiring Christian McCaffrey from the

Carolina Panthers in a win-now trade, the 49ers have strengthened an already potent offence that features tight end George Kittle, wide receivers Deebo Samuel and Brandon Aiyuk,

and left tackle Trent Williams. As a team, they also boast the best defence in the NFL.Without Garoppolo, however, they will have to improvise.