According to the 30th verse of Surah Al-Nur:
قُل لِّلْمُؤْمِنِينَ يَغُضُّوا مِنْ أَبْصَارِهِمْ وَيَحْفَظُوا فُرُوجَهُمْ ۚ ذَٰلِكَ أَزْكَىٰ لَهُمْ ۗ إِنَّ اللَّـهَ خَبِيرٌ بِمَا يَصْنَعُونَ ٣٠
Tell the believing men to reduce [some] of their vision and guard their private parts. That is purer for them. Indeed, Allah is Acquainted with what they do. (30) http://tanzil.net
So it shows the significance of controlling of our eyes in looking at non-Mahrams.
I was wondering what the view of contemporary Shi'a scholars such as Ayatollah Khamenei is regarding watching football matches? (For women, to watch football matches of men)