Glenn Murray
Former Brighton striker on BBC Two

Credit to Doncaster to get back into it and we spoke at half-time about who will be the characters in that dressing room to stand up and it was Billy Sharp.

In all honesty he wasn't really too involved in the game but when you've needed him he's stood up.

This one isn't done and dusted yet.

Can Blackpool get back into the contest or will Birmingham take the win out of their grasp?

Isiah Noel-Williams gets into the box on the left for Kettering but slashes a cross over everyone. There must be some heavy legs out there on this pitch...

Troy Deeney
Former Watford striker on BBC Two

Over the course of the game a draw was probably fair.

You'd fancy Kettering in the first half but in the second it's been all Doncaster going forward and creating chances.

Harborough Town, all in yellow, kick start proceedings with a giant in their sights.

Can Tamworth knock another League One side out the competition?

Time to find out...

Here we go again. Doncaster get us going for extra-time...

Three changes for Burton Albion from their League One defeat to Charlton in the week.

Elliot Watt, Kegs Chauke and Jack Cooper Love are the new names for the starting XI.

Charlie Webster and Jack Hazlehurst on the other hand don't make the trip but Alex Bannon is on the bench.

While Tamworth make just the one change from the side that won Dagenham & Redbridge - who incidentally knocked out AFC Wimbledon yesterday - on Saturday.

Alex Fletcher moves to the bench to make room for long throw expert Tom Tonks.

Image source, Getty Images

Burton Albion and Tamworth were both non-league when they last played an FA Cup tie against each other.

Since then, the Brewers have made it all the way to League One but the prospect of facing a side that are two leagues above them won't trouble the Lambs one bit.

Last round, Andy Peaks' side defeated the third tier's Huddersfield Town 1-0 in one of the biggest shocks of the competition so far.

Can they do it again against an opponent who is out of form, without a permanent manager and facing relegation in their respective league?

Or will lightning fail to strike twice?

Image source, Getty Images

It has been a long slog already for Southern Central Premier League side Harborough Town with their journey starting back in late August.

After beating Darlaston Town, needing a replay to get into second qualifying round, they have knocked out Stourbridge, Leamington, Bury and, in the first round proper, Tonbridge Angels.

The Bees face undoubtedly their biggest test today against a side in Reading who are not only 108 league positions above in League One but going well too in seventh and nudging the fringes of the play-off places.

It is a mighty ask for the minnows Harborough but they can draw hope from twice punching above their weight to this point when knocking out Leamington and Tonbridge, from National Leagues North and South respectively.

Reading did not have too much trouble easing past League Two opposition in Fleetwood Town in round one, winning 2-0 at home. And fresh from a come-from-behind 2-2 draw against fellow play off hopefuls Barnsley and with six wins in their last 10 league outings , confidence will be high that this should be a walk in the park.

It's going to extra-time.

Kettering looked to be on course for an upset when Isiah Noel-Williams put them ahead after half-an-hour but Billy Sharp struck for Doncaster 15 minutes from time.

A valiant effort so far by the Poppies against League Two opposition.

Another massive 30 minutes incoming (and possibly penalties)...

Wow, Doncaster almost nick it as Joe Ironside gets in but Kettering defend brilliantly to clear it away with Josh Emmanuel also lurking.

Luke Molyneux swings it in for Doncaster but Kettering can clear. Into the final minute of added time...

A late corner now for Doncaster. Will they break Kettering hearts?

George Broadbent is into the book for Doncaster as Kettering looked to launch a breakaway but he brings down Lewis White on halfway.

Troy Deeney
Former Watford striker on BBC Two

It's great technique from Lewis White as he lets it bounce over his shoulder.

It's a good save from the keeper. They're not easy to deal with.

Wow, what an effort this is from Kettering defender Lewis White! It drops to him on the edge of the box and he hits it on the half-volley on the turn.

It's goal-bound but Teddy Sharman-Lowe is down well to beat it away. Some technique there from White.

Image source, Rex Features

Four changes for Harborough Town from the side that beat Banbury United 4-1 in front of 305 people eight days ago.

And one of them sees former Spurs and Brazil international Sandro in the starting line-up.

The 35-year-old is kickstarting a twilight phase of his storied career by turning out after being half-jokingly asked to play for the seventh tier side by Spurs-mad Harborough manager Mitch Austin.

Other changes from the side which beat Banbury include Paul Malone, Ben Williams and Freddie Robinson.

Eight changes for Reading from the side who drew with Barnsley in last Tuesday night with David Button, Jayden Wareham, Andrew Garcia, Ashqar Ahmed, Mamadi Camara, Basil Tuma, Abraham Kanu and Adrian Akande all in.

Eight minutes added on for a hero or villain to be made in this gripping FA Cup second-round tie...

Ben Hart's corner comes over everyone and it's retrieved by Aaron Powell but his effort goes wide.