Cryptic crossword. 4d) seconds regularly relent (6) s?f?e? 6d) handicap left one with strength (9) l?a???i?y 7d) sounds like grain yield (4) c?d? 8d) gather together for a short prayer (7) ?o?l?c? 9d) gave an address to read out (6) ?r???d. 15d) unopened spread, it's said (7) ?t????e? 17d) worlds way in training (6) p?a?e? (Hope you have better luck than I have been on the go since Tuesday! these really do my head in)