In the Yokohama vs JEF United match, I bet on Yokohama's victory. The team is currently in 3rd place in the J2 League, with an impressive 15 wins out of 24 matches. They have a strong defense and a good position in the league table. JEF United, on the other hand, is currently in 7th place, with average results and less consistent form. I believe Yokohama will be able to win, considering their current form and motivation to advance to the J1 League.