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Group H is probably the toughest one to call at this year's World Cup, with all four teams surely believing they can qualify for the knockout stages.
Colombia are the favourites to top the standings at 13/8, with Japan least fancied of all to qualify.
We have seen some surprise results so far and this clash is another with potential. Japan have showed in the last couple of World Cups their technical quality and tireless work-rate, and they could get a positive result here to get their campaign off to a good start.
A draw is fancied here and at 14/5 it could be worth a small play, while Japan-draw on a double chance is available at 13/10.
Colombia have drawn five out of their last nine fixtures, with two of those coming in their pre-World Cup warm-up friendlies against Australia and Egypt, so a failure to finish off games has been a problem of late.
Japan will enjoy the underdogs tag and the likes of Shinji Okazaki and Shinji Kagawa can inspire them going forward.
A score draw is available at 4s, while a draw and under 2.5 total goals is 3/1, but just heading to the match market is advised.
Prediction: (George Pitts)
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Posted at 1255 BST on 18/06/18.