The Argentine attacker and the Spain midfielder both make this week's selection thanks to their heroics in the Catalans' crucial 4-3 win at Real Madrid on Sunday
Barcelona shook up La Liga by claiming Clasico victory at the Santiago Bernabeu on Sunday with a stunning 4-3 win.
The Catalans' success saw them move to within a point of fierce foes Real Madrid at the top of the table, while Atletico moved top thanks to their head-to-head record against their city rivals after beating Betis 2-0 earlier in the day.
Elsewhere in the 29th round of matches, there were wins for Malaga, Granada, Athletic Bilbao, Sevilla, Valencia and Almeria. And here, Goal looks at the standout performers from the latest Liga action.
In goal, Keylor Navas was superb once again for Levante, helping the Valencia-based side to a clean sheet and a point at Espanyol.
At the back, Federico Fazio was excellent for Sevilla in the Andalusians' 2-1 win at Osasuna, while Diego Godin was a rock in defence for Atletico at Betis and Aymeric Laporte formed a key part of a solid Athletic rearguard as the Basques held off Getafe in a hard-fought 1-0 win at San Mames.
Andres Iniesta produced a vintage performance for Barcelona in the Clasico and set Barcelona on their way to victory with the opening goal at the Bernabeu. Meanwhile, Ignacio Camacho shone for Malaga with both goals in the 2-0 success at Celta on Friday, while Valencia's Javi Fuego hit a double to give his side a hard-fought 2-1 win at home to regional rivals Villarreal. Jose Antonio Verza was also on target twice for Almeria (both penalties) as the Andalusians downed Real Sociedad in another epic 4-3 on Monday night and Markel Susaeta makes up the midfield after his stunning strike saw Athletic overcome Getafe and keep the Basques on course for a fine fourth-placed finish.
Up front, Rayo Vallecano's Alberto Bueno is included for his fine volley which saw the Madrid side claim a point at Valladolid. And he is joined by Barca's Lionel Messi after the Argentine struck his second Clasico hat-trick, set a new scoring record for the fixture and, more importantly, inspired Barca to a victory which sees them back in the race for La Liga. Messi also set up Iniesta's goal and his wonderful pass to Neymar led to the first of two penalties which he himself converted to secure a memorable victory.