The biggest thing with the Twins injuries is the drop-off to the next level of player. Buxton, Larnach, Kirrilloff and Kepler become Cave, Celestino, Contrearas and Garlick. All 4 of those players are capable players in reserve and specialty roles, not to run out there daily. Polanco and Correa become Palacios and Beckham, Jeffers becomes Caleb Hamilton, Jose Godoy, and Leon, who was in AAA when traded for. Gordon has been the lone bright spot from these injuries.
I don't think I have the time or the want to go into the rotation and bullpen, but both fall off drastically when injuries occurred and/or pitchers had to pitch in roles they were not suited for.
Correa and Sano being injured gave the team the opportunity to see what Lewis and Miranda could do, and unfortunately for Lewis he also got injured. It also gave Arraez a chance to play everyday, but I suspect that is also why his numbers have fallen off the last month or so.
The IL stints also do not include how many games Buxton, Kepler, Polanco, Larnach, Kirilloff, Jeffers and several pitchers tried to play through injuries, affecting their performance and the teams.
Injuries de-railed this team, despite them being able to overcome them and be competeive until recently. They are 39-49 since June 1 and injuries have played a significant role.