Aoki Densetsu Shoot!

Well.. they are both about soccer. Aoki Densetsu Shoot is older though. But I gotta say Wild Striker is a lot more fun to watch.  

do you love soccer? Both seem to answer that question. 

Sports series where the passing away of a friend / teamate brings everyone togethor to win for their sake. and emotional moments around the middle of the series that greatly impacts the main characters.  

Aoki Densetsu Shoot! is definitely better, but if you like soccer, both of these are for you. Aoki is a traditional, old school kind of anime that is just a rollercoaster of emotions. Give it a shot (pun intended) 

Both about soccer. Both tells about a long way to be the best with their teams. Themes are similiar in terms of comedy, romance, sports and friendship. 

Another sports anime focusing on a male protagonist with a trump card technique, both with slice of life elements. Charismatic non main character captains in both. Soccer instead of volleyball -- older hidden gem, check it out! 

Both of them are about football in school. So if you like Whistle you will be more impressed with Aoki Densetsu Shoot! ADS is more interesting and has a bit of romance in it