Coach Stanislav Cherchesov, still refusing to show any sign of the huge relief he must be feeling after steering the hosts out of the group phase against most Russians' expectations, would not discuss his emotions and put the result down to packing a five-man defensive line to smother Spain.
"It's the coach who makes the decisions", Iniesta said.
Russian Federation coach Stanislav Cherchesov said it was a "life and death match". It's very tough to go out like this, with these players.
Spain finished the half with a burst of activity, registering a couple of efforts, but the next 40 minutes were turgid, a state of affairs not helped by the 25-degree temperature.
De Gea - for who United often use the social media hashtag #DaveSaves - went into the tournament regarded as one of the best goalkeepers in the world but heads home having faced 11 shots on target - including the Russian Federation shoot-out - and only able to save one.
"There is a lot of pain in the delegation, the players, the coaching staff,", Hierro told reporters.
Here's a look at three things we learned today at the World Cup.
Oil prices drop as supplies increase
In a welcome move, India and China are working on combining their forces to counter Opec's ability to dictate crude oil prices. USA crude output has risen nearly 30 percent in the last two years to a record high of 10.9 million barrels per day.
"There are 15 players who have given everything, I have absolutely no complaint". "They are better than us in many ways. We understand that in these moments you have to be effective".
This World Cup has seen 132 goals so far and we've seen some scintillating ones, but we've also had a fair share of "freak" goals.
Spain settled into a comfortable but tedious passing rhythm, though they were almost caught out when Golovin found space on the edge of the box and sent an effort just wide of the upright.
Spain exited the 2018 edition of the tournament on Sunday courtesy of a penalty shoot-out defeat against unfancied hosts Russian Federation after being held to a 1-1 draw over 120 minutes. Dzyuba stepped up with confidence and dispatched the spot kick beyond David de Gea for an unlikely equaliser.
Six minutes into bonus time, Russian Federation took advantage of the new rule allowing a fourth sub in extra time, bringing on history-maker Aleksandr Erokhin to help some exhausted legs in midfield.
Akinfeev came to the rescue again to deny Rodrigo after his fine sprint in the second half of extra time before becoming a national hero by saving the two spot kicks to send the hosts past the former world champions.