Who knows.... Jack never faced a guy with a jab like Foster. Foster never faced a guy who was great at clinching.
Johnson ko'd the best jabber of his generation, Denver Ed Martin. Six feet four, 84 inch reach. This content is protected
If the ref is from Johnson era then Jack should win easy he'd dominate Foster in the clinch plus the smaller gloves allowed you to control your opponent more and hold and hit etc if the ref is from the 70's and breaks things up quick could be interesting still favour Johnson.
Too distant in the timeline to really make a guess for me it’s easy to imagine a lot but the reality is often so very different.
Obviously I haven't seen Martin fight.Foster's jab came up from the waist and it was a very good one,but I think he was more noted for power,which destroyed light heavies but didn't usually have the same effect on heavyweights.Foster was also stick thin and not built to take punishment.I rate him highly but think he loses this one.