Chang leads 80-77 end of Day 2 after trailing Shane start of day 37-40 so he won Day 2 by 6 racks 43-37. Interestingly almost identical scores both days-
For most of Day 2, Chang played poorly all kinds of misses, bad position errors but stayed closed to Shane. Biggest lead by Shane was 7 racks like Day 1 when biggest lead by Chang was also 7 racks
Shane led through the day mostly with Chang getting to within 1 rack at times. Then with Shane ahead 75-70, Chang suddenly move into high gear , turns into beast mode and puts on superb 7 pack to snatch the lead for first time in 2nd Day 77-75
That jump cut and then 4 rails for position toward end of match is just sick and arguably shot of the match.
3 racks lead is still too close to call and either of them can win this whole thing but Chang would have to be slight favorite going into Day 3.