Middlesbrough dominated a first half in which the Robins failed to have a single shot, but Riley McGree was the only one to test Radek Vitek on the stroke of half-time. Aidan Morris and Alan Browne also called Vitek into action before substitute Castledine found the breakthrough in the 65th minute with a fierce finish.
As with our decision to take over Wrexham five years ago, we genuinely have no idea how this is going to go, but we will give it our best. Neither of us have called a sporting event of any variety, let alone a sport we basically learned the rules of five years ago.
Wrexham punished the hosts on the half-hour mark as Rathbone, who signed a contract extension earlier in the week until the summer of 2028, showed ingenuity to slot them ahead. Nathan Broadhead's cross was headed clear by Charlton captain Lloyd Jones but Rathbone produced a smart low threaded finish into the bottom right corner of the net from just outside the penalty area.
Starting with the hosts, hit with a six-point deduction earlier in the month and dealing with a string of public financial issues behind the scenes, Leicester find themselves at the heart of an infamous crisis. Remarkably free-falling into the drop zone, Gary Rowett's men have a major job on their hands in the race to avoid consecutive relegations.
He is really a lively boy, a smart player, good dribbler, fast, can use both legs. He's good. It was nice to watch, really nice to watch - him coming in and immediately a lot of things are obviously natural to him, which is really helpful.
Millwall will look to bounce back from Saturday's shock 3-1 home defeat by Portsmouth and consolidate their position in the Championship play-off places, against a Birmingham side who are aiming to narrow the gap to the top six.
Swansea's owners have explained the influx of celebrity investors by saying it is part of their vision to raise the club's profile so they can generate more revenue, allowing them to invest more in the squad while staying within profit and sustainability rules.