#10 Portugal
Portugal make it to this list just because of one man - Cristiano Ronaldo. Although he has not hit top form this season, his goal-scoring ability is beyond doubt. The team's triumph in Euro 2016 was definitely a result of great defending rather than attacking (and also the luck of an easy draw!), and that has been the case in the qualifiers as well. Only 4 goals conceded, and 32 goals scored, with about half of those coming from Cristiano Ronaldo (15 goals). William Carvalho pulls the strings with crucial interceptions and breaking attacks in the midfield, ably supported by Joao Moutinho, Joao Mario and Andre Gomes who are more attacking in nature. The midfield has been criticised regularly for their lack of attacking initiative though, which is something they need to work on.
Nelson Semedo has looked like a revelation, donning new colours at Barcelona at the right back position, while Pepe has been lauded at Besiktas as well. Hence, the defence seems to be in good hands, with the composed Rui Patricio in goal, who played a major part in last year's Euro victory. Andre Silva could prove to be an able partner to Cristiano Ronaldo upfront; the latter considers Silva to be his heir, which is an incredible compliment. Ricardo Quaresma and Nani can play the supporting roles well in attack, giving the team a complete look. All in all, Portugal could prove to be a team others would not want to face in Russia 2018.
Defence: 8/10
Midfield: 6/10
Attack: 7/10
Key players: Cristiano Ronaldo, William Carvalho, Pepe