Iv'e never heard of a single case where a reprobate was saved, yes there are millions of Judas's making professions of faith but that's another thing all together.
What is the biblical meaning of reprobate?
Strong's Concordance
adokimos:
not standing the test, rejected
Transliteration: adokimos
Which means disqualified, failing the test, rejected, unapproved, worthless.
Now the Bible makes it crystal clear that ALL HAVE SINNED and come short of the glory of God, and that THERE IS NONE RIGHTEOUS no not one. So if God were in the business of condemning the whole world of sinners (or a large portion thereof), not a single person would be saved, and all would be disqualified and rejected, and deemed reprobate.
But what saith the Scripture?
And the times of this ignorance God winked at; but now commandeth all men every where to repent (Acts 17:30).
If all men everywhere are commanded to repent, and if all would heed that command, then all would be saved. Therefore
THERE IS NONE REPROBATE, NO NOT ONE. God offers salvation freely to "whosoever will".
And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely. (Rev 22:17).
Presenting the sovereignty of God when the issue is the infinite grace of God means a dishonest presentation of the Gospel.
When Christ gave us the parables of the lost coin, the lost sheep, and the lost son, was he presenting the sovereignty of God? And should that not settle the issue?