https://legacy.baseballprospectus.com/compensation/cots/national-league-central/milwaukee-brewers/ Cott's has him at 4.107 years from the beginning of the season, I believe. Also, that is not equivalent to 4 years and 107 days. I think it is just the decimal for the fraction of the season. For instance, if someone else is sent down midseason, my guess is that he would have .5 service years at the end of the year assuming he was up at season's beginning. So if a season is six months plus long, each month would be roughly .16 of a service year. Three weeks would roughly be .12 or so, which would be enough time down to give keep Jimmy under 5 years of service at season's end.That would make 2021, not 2020, his last year controlled by the Brewers since FA is granted after 6 complete service years (6.0) in MLB. So..... my guess is this is the mule driving the cart. It makes sense for the Brewers to send him down now, and it makes sense that Nelson is a little confused with his recent move to AAA.