I did a bit of quick research on the Betis starting XI yesterday. Around half of the team have not yet made their full debut (mainly new signings) - and their most recent 2 top scorers didn't play at all. Which explains their complete lack of penetration up front.
http://www1.skysports.com/football/...t-real-betis-2-1-in-final-pre-season-friendly No link to any line ups though.