Ferrer in 3 Nishikori in 3 Federer wins 1. Federer

2. Nishikori 1. Federer

2. Nishikori Murray in 2 1. Murray

2. Federer 1. Murray

2. Federer Murray in 3 1. Murray

2. Federer

1. Federer

2. Nishikori

Nishikori in 2 Nishikori in 3 Raonic in 3 Raonic in 2 Federer in 2 1. Federer

2. Nishikori 1. Federer

2. Nishikori 1. Federer

2. Nishikori 1. Federer

2. GR Federer in 3 1. Federer

2. Nishikori 1. Federer

2. Nishikori 1. Federer

2. Nishikori 1. Federer

2. Murray Murray in 3 1. Federer

2. Nishikori 1. Federer

2. Nishikori 1. Murray

2. Federer 1. Murray

2. Federer Murray in 2 GR (see below) 1. Murray

2. Federer 1. Murray

2. Federer 1. Murray

2. Federer

It's that time of the season again! Maths and scenarios and calculations galore.Group B of the 2014 World Tour Finals ended its second day of matches, and we can already calculate most of the possibilities for the semifinal qualifications. (Also check out the similar scenarios for Group A Thursday's matches are Federer-Murray and Nishikori-Raonic. Here are the qualification scenarios for every possible outcome of those matches (winner + number of sets). Where it says "GR", it means we're going to have to calculate the game ratios (games won out of total played games) of all players to know who qualifies (Raonic can only qualify if he wins in 2).ETA: Of course, Raonic's withdrawal changed everything, as Ferrer can't qualify no matter what he does. I'm writing this as the Nishikori-Ferrer match is at 6-4 4-6, so whoever wins, does it in 3 sets. This leaves us with the following scenarios:The old scenarios, for those curious:Game ratio scenarios: