Stefanski joined the Vikings in 2006. From 2017-18, he coached the quarterbacks and added the role of interim offensive coordinator before being named the team's sole offensive coordinator in 2019 before coming to the Browns in 2020.
Thielen joined the Vikings in 2014. Interesting that in 16 games in 2018, Thielen caught 113 passes for 1373 yards. In 2019, after Stefanski took over OC duties, Thielen only played 10 games due to injury but his output was seriously lacking compared to 2018 with 30 receptions for 418 yards.
Diggs joined the Vikings in 2015. In 14 games started in 2018, Diggs caught 102 passes for 1021 yards. In 2019, after Stefanski took over OC duties, Diggs started 15 games and only had 63 receptions compared to 2018. Combined, Thielen and Diggs lost 122 receptions in 2019 compared 2018 and thus caused Diggs to demand a trade.
One other note, Cousins completed 425 passes in 2018 - in 2019 he only completed 307 on 162 less attempts from the previous year.
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