Alessandro Troncon will earn his 100th Test cap when he lines up for Italy against Portugal in the World Cup Pool C match at the Parc des Princes on Wednesday.

The 34-year-old scrum-half returns to the Azzurri's starting XV after dropping to the bench for their 24-18 win over Romania in Marseille last week.

Only seven of the team that scraped to victory over the Romanians are retained by coach Pierre Berbizier.

Behind the scrum, full-back David Bortolussi and centre Gonzalo Canale are spared the drop, while experienced quintet Andrea Lo Cicero, Martin Castrogiovanni, Marco Bortolami, Mauro Bergamasco and Sergio Parisse are the survivors in the pack.

Parisse will move to openside flanker to accommodate the inclusion of number eight Manoa Vosawai, while Carlo Del Fava comes in at lock and Leonardo Ghiraldini at hooker.

Pablo Canavosio and Matteo Pratichetti are the new wingers and Andrea Masi replaces Mirco Bergamasco in midfield.

Roland de Marigny, who started for the Italians in their defeat to New Zealand in Marseille a week and a half ago, returns at fly-half.

Portugal coach Tomaz Morais has rung the changes for the clash at the Parc des Princes.

There are only six survivors from the team that were defeated 108-13 by New Zealand in Lyon on Saturday.

Winger Antonio Aguilar and centre Diogo Mateus retain their places in the back division, while Morais keeps faith with hooker Joao Correia, prop Ruben Spachuck, lock Goncalo Uva and number eight Vasco Uva in the pack.

Prop Rui Cordeiro, who scored a try against New Zealand, and goal-kicking fly-half Duarte Pinto are two of the players recalled.

The match will be tournament debutants Portugal's third in 11 days. Their loss to the All Blacks was preceded by a 56-10 defeat to Scotland.

Italy: D Bortolussi; P Canavosio, G Canale, A Masi, M Pratichetti; R de Marigny, A Troncon; A Lo Cicero, L Ghiraldini, M Castrogiovanni, C Del Fava, M Bortolami (capt), S Parisse, M Bergamasco, M Vosawai.

Replacements: F Ongaro, M Aguero, S Perugini, V Bernabo, S Orlando, P Griffen, E Galon.

Portugal: P Cabral; David Mateus, F Sousa, Diogo Mateus, A Aguilar; D Pinto, J Pinto; R Cordeiro, J Correia, R Spachuck, D Penalva, G Uva, T Girco, J Uva, V Uva (capt).

Replacements: JM Mure, A Silva, D Figueiredo, P Murinello, L Pissarra, D Gama, G Foro.