oldvictor Is this the first time that all three clubs that went down from the Premiership that none of them got automatic and all three ended up in the play offs ?
Yes - it is the first time with the 3 relegated sides in the playoffs.
1995/96 came close - with Crystal Palace and Leicester making the playoffs, but relegated Ipswich missing out in 7th. Of course there was a 4th side relegated the previous season so the odds were different - Norwich ended up mid-table. Leicester ended up winning - this is the only example of a relegated side winning the playoffs, so it looks good for Cardiff this time round.
Its certainly not the first time none of the relegated clubs have got automatic. In fact in 19 seasons*, all of them failed to bounce straight back on 7 occasions.
Season - previous years relegated sides:
1994–95 Sheffield United Oldham Athletic Swindon Town
1998–99 Bolton Wanderers Barnsley Crystal Palace
2000–01 Wimbledon Sheffield Wednesday Watford
2004–05 Leicester City Leeds United Wolverhampton Wanderers
2005–06 Crystal Palace Norwich City Southampton
2007–08 Sheffield United Charlton Athletic Watford
2010–11 Burnley Hull City Portsmouth
So relegation from the premierleague rarely results in promotion - in the 56 promotions since 1993*, only 14 of these were teams bouncing straight back up.
Of these 14, the most common route is as Champions - 7 times out of 19 has the Champion been a relegated side, as below.
1993–94 Crystal Palace
1996–97 Bolton Wanderers
1997–98 Nottingham Forest
1999–2000 Charlton Athletic
2001–02 Manchester City
2006–07 Sunderland
2009–10 Newcastle United
6 times out of 19 the runner-up has been a relegated side.
1993–94 Nottingham Forest
2002–03 Leicester City
2003–04 West Bromwich Albion
2006–07 Birmingham City
2008–09 Birmingham City
2009–10 West Bromwich Albion
And of course, as above, the sole example of winning the playoffs
1995/96 Leicester City.
So interestingly, only 4 clubs have ever bounced back up without winning the league, but 3 of them have done it twice. Jammy.
* - I did this from 1993 as the first season featuring clubs form the Prem - so 19 seasons, not 20 like the PL.