By ESPNSTAR.com staff
The game also marks Schalke's 1,500th Bundesliga game and is the highlight of the calendar for many Schalke fans.
In the current season, Dortmund have already suffered a surprise defeat to Hamburg and have been held to a draw by Nuremberg, Eintracht Frankfurt and Hannover. The Royal Blues, on the other hand, have fared better and are currently ahead of their historic rivals by two points in the Bundesliga table.
The derby pits the two most famous clubs in the Ruhr area and the young goalkeeper is excited for the game even if he's unsure whether he'll get a chance to feature in the starting XI on the day.
"If we really have to, we can come back from two goals down to win, too! That wouldn't bother me at all," he was quoted as saying in comments to the club website.
"I think we've made up some ground on Dortmund. It's sure to be an exciting game."
The 22-year-old German goalkeeper has been the main custodian for the side in the place of seasoned veteran Timo Hildebrand who had suffered an injury recently. With the senior player's return to full fitness, Unnerstall is unsure if he will be selected but he stated that he would do his best in training to get a chance to play in the high-profile derby.
"I don't know who'll be in goal. I'm happy for Timo that he's back but I obviously want to carry on in goal for the next few games.
"I'll do all I can in training and then we'll see who the coach opts for."
Schalke coach Huub Stevens stated that his side will play with passion in order to secure a derby win on Saturday although he did accept that Dortmund, who have won consecutive Bundesliga titles in the past two years, will be a tough proposition.
"It's a very special match for players and fans alike," Stevens said.
"We want to play with passion and show our quality on the pitch.
"Borussia are an excellent team who have won the league twice in a row. It's no easy task but we don't intend to hide."